Each year Exxon$-$Mobil expends large amounts of

funds for mechanical safety features throughout its

worldwide operations.

Carla Ramos, a lead engineer for Mexico and Central

American operations, plans expenditures of $$1$

million now and each of the next $4$ years just for the

improvement of field$-$based pressure release valves.

Construct the cash flow diagram to find the

equivalent value of these expenditures at the end of

year $4,$ using a cost of capital estimate for safetyrelated funds of $12\%$ per year