The Secretary of Agriculture shall utilize, to the fullest extent practicable, the authorities under the Commodity Credit Corporation Charter Act [15 U.S.C. 714 et seq.] (including exportation of dairy products at not less than prevailing world market prices), the Agricultural Trade Development and Assistance Act of 1954 [7 U.S.C. 1691 et seq.], and other authorities available to the Secretary to reduce inventories of dairy products held by the Commodity Credit Corporation so as to reduce net Commodity Credit Corporation expenditures to the estimated outlays for the milk price support program used in developing budget outlays under the Congressional Budget Act of 1974 for the appropriate fiscal year.