The Director of the Department of Finance shall also have authority and shall be required to: prescribe the forms of receipts, requisitions, vouchers, bills or claims to be used by the offices, departments, divisions and agencies of the Village; examine and approve all contracts and other documents by which the Village incurs financial obligation; inspect, audit and approve, before payment, all purchase orders, bills, invoices, payrolls and other evidence of claims, demands or charges against the Village; and inspect and audit any account or record of financial transaction which may be maintained in any office, department, division or agency of the Village, apart from or subsidiary to, the accounts kept in the office of the Director of the Department of Finance.