Determine the change in net working capital that appears warranted for the following proposed project: Inventory levels will increase 20% from their current value of $500,000; cash will increase by $25,000; wage accruals will increase by $60,000; machinery will increase by $75,000; accounts receivable—because of a new collection system—will increase by only $15,000; accounts payable will increase by $45,000. What happens to net working capital at the end of the project's life?

Please show steps and formulas used.