Answer:
NPV = -$78,318
Step-by-step explanation:
cash flow 0 = -$310,000 - $190,000 = -$500,000
cash flow 1 = $125,000
cash flow 2 = $125,000
cash flow 3 = $125,000 - $58,000 = $67,000
cash flow 4 = $125,000 + $83,000 + $190,000 = $398,000
NPV = -$500,000 + $125,000/1.2 + $125,000/1.2² + $67,000/1.2³ + $398,000/1.2⁴ = -$78,318