Show the Cash Flow Diagram and solution. Subject: Engineering Economy Determine the present value of the following cash flows; P4,000 at the end of 6th month and every month thereafter for the first year, and P5,000 every year in perpetuity. Interest rate at 6% effective. Show the Cash Flow Diagram and solution. Subject: Engineering Economy Determine the present value of the following cash flows; P4,000 at the end of 6th month and every month thereafter for the first year, and P5,000 every year in perpetuity. Interest rate at 6% effective