In all cases where any of the military forces are called into active service by the governor and where no funds otherwise appropriated are available therefor, or where the appropriated funds, if any, are insufficient, the adjutant general shall pay the necessary amounts out of the general fund, and the necessary sums are hereby appropriated. No payment shall be made pursuant to this section until the adjutant general has given the commissioner of management and budget an estimate of the cost of the active service, the commissioner of management and budget has reported the estimate to the Committee on Finance of the senate and the Committee on Ways and Means of the house of representatives, and the commissioner of management and budget has approved the payment. When the active service has been completed, the commissioner of management and budget shall report the actual cost to the Committee on Finance of the senate and the Committee on Ways and Means of the house of representatives.