The governing body of the county of Richland and the governing body of the county of Lexington are hereby authorized and directed to make, execute and deliver a contract, each with the other, agreeing to pay to the Richland-Lexington Airport Commission, in equal amounts, the funds necessary to meet the annual operating deficit, if any, of the Richland-Lexington Airport Commission or to provide for the Commission sufficient funds to prevent any such deficit from arising by annual equal payments to the Commission's anticipated budget.