Finding the Fourth Proportional to 78,302.87, 108,058.25 and 42,492.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,302.87 : 108,058.25 = 42,492.87 : x
2. Step 2: Convert to fraction form
   78,302.87/108,058.25 = 42,492.87/x
3. Step 3: Cross multiply
   78,302.87x = 108,058.25 × 42,492.87
4. Step 4: Simplify right side
   78,302.87x = 4,591,705,275.91
5. Step 5: Solve for x
   x = 4,591,705,275.91/78,302.87
6. Step 6: Final answer
   x = 58,640.32