Finding the Fourth Proportional to 78,302.16, 108,057.24 and 42,492.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,302.16 : 108,057.24 = 42,492.18 : x
2. Step 2: Convert to fraction form
   78,302.16/108,057.24 = 42,492.18/x
3. Step 3: Cross multiply
   78,302.16x = 108,057.24 × 42,492.18
4. Step 4: Simplify right side
   78,302.16x = 4,591,587,692.38
5. Step 5: Solve for x
   x = 4,591,587,692.38/78,302.16
6. Step 6: Final answer
   x = 58,639.35