If the sum of the amounts to be distributed pursuant to Paragraphs (1) and (2) of this subsection exceeds fifty percent of the distributable amount in the county government road fund, the excess shall be eliminated by multiplying the amount determined in Paragraphs (1) and (2) of this subsection for each county by a fraction, the numerator of which is fifty percent of the distributable amount in the county government road fund, and the denominator of which is the sum of amounts determined for all counties in Paragraphs (1) and (2) of this subsection.
NMS § 7-1-6.26