Finding the Fourth Proportional to 86,522.52, 129,788.03 and 42,187.17

Step by Step Solution

1. Step 1: Write the proportion equation
   86,522.52 : 129,788.03 = 42,187.17 : x
2. Step 2: Convert to fraction form
   86,522.52/129,788.03 = 42,187.17/x
3. Step 3: Cross multiply
   86,522.52x = 129,788.03 × 42,187.17
4. Step 4: Simplify right side
   86,522.52x = 5,475,389,791.04
5. Step 5: Solve for x
   x = 5,475,389,791.04/86,522.52
6. Step 6: Final answer
   x = 63,282.83