Answer:
At the end of year 4 (one year before the first cash flow)
Step-by-step explanation:
According to the present value of perpetuity concept here we divided the predicted cash flows by the rate of that period by calculating this it provides the present value that is prior to the cash flow now if we want for more years so we should have to discount over that time period
Since in the given situation the starting of the cash flows is from the ending of year 5 therefore the timeline would be at the closing of year 4 i..e one year prior to the first cash flow