estopped from claiming the net asset value of each share of Tome stock was less than the book value established by Tome at $40,000. Appellants assert the court erred by not considering asset value to be the sole determining factor in arriving at fair •'value. Appellants also seek reversal of the tidal court’s judgment, because they were not awarded reasonable attorneys’ fees and interest at 6[^% per annum, instead of the 6% per annum granted by the court in its order.
The only contention of cross-appellant Tome is that the trial court erred in refusing to give investment value any weight in determining the fair value.
It is well settled in New Mexico ■that the appellate court will not substitute its judgment for that of the trial court in weighing the evidence. If the trial court’s findings are supported by substantial evidence, they must be affirmed. Cave v. Cave, 81 N.M. 797, 474 P.2d 480 (1970). Substantial evidence means such relevant evidence as a reasonable mind might find adequate to support a conclusion. Cave v. Cave, supra.
Section 51-28-4, supra, under which this action was brought, does not specify the method by which the court should determine fair value. The statute suggests the court may appoint an appraiser, but in the instant case this was not done.
In arriving at the fair value of the shares of the dissenting stockholders, the courts have been almost unanimous in using a combination of three elements of valuation: (1) Net asset value; (2) market value; and (3) investment or earnings value. Brown v. Hedahl’s-Q B & R, Inc., 185 N.W.2d 249 (N.D.1971). Then the three elements of value must be weighted in such proportions as to reasonably reflect the importance and reliability of each to the final determination of fair value. Factors which courts have traditionally considered when apportioning weight among market value, investment value and asset value are the nature of the corporation, market demand for the stock, the business the corporation is engaged in, its earnings, net assets, and other variables such as general economic conditions. See Note, Valuation of Dissenters’ Stock under Appraisal Statutes, 79 Harv.L.Rev. 1453 (1966). See also 55 Mich.L.Rev. 689 (1957).
From a reading of the cases, it appears that the appraiser, or the trial court in this case, has discretion in determining market, asset and investment value. The appraiser’s valuation is then subject to review by the trial court to determine whether it is supported upon reasonable grounds. If the appraiser’s valuation is not so supported, the trial court may substitute its own calculation of any or all of the factors. Sporborg v. City Specialty Stores, 35 Del.Ch. 560, 123 A.2d 121 (1956); Brown v. Hedahl’s-Q B & R, Inc., supra. In addition, the trial court may also examine the appraiser's allocation of weight to be given each factor and, if a proportionate weight is unreasonable in light of surrounding circumstances, the trial court may modify the allocated weight. Brown v. Hedahl’s-Q B & R, Inc., supra; In re Tudor City, Fifth Unit Inc., 17 App.Div.2d 794, 232 N.Y.S.2d 758 (1962).
The first question facing this court is whether the findings as to market, asset and investment value, as made by the trial court, are supported by substantial evidence.
Appellants contend there is no substantial evidence to support a finding that the market value of Tome stock was $3,500 per share on June 28, 1968. Market value is generally the base price at which a stock could be sold by a willing, informed seller to an informed, willing buyer. See Note, Valuation of Dissenters’ Stock under Appraisal Statutes, 79 Harv.L.Rev. supra, at 1460. Even though there was no open market on Tome stock, we believe the evidence in the records reasonably supports the conclusion that the market value of Tome stock on the date specified was $3,500. Appellants, in advancing this contention, assert that the principal source of evidence as to market value, as found by