Whenever in this act any action is to be taken or decision made by the Governor, the Auditor General and the State Treasurer, and the three officers shall not be able unanimously to agree, the action or decision of the Governor and either the Auditor General or State Treasurer shall be binding and final, except that it shall be the mandatory duty of the Governor, the Auditor General and the State Treasurer to issue bonds to provide funds for the acquisition of toll bridges when the Secretary of Highways, with the approval of the Governor, shall decide to do so.