Finding the Fourth Proportional to 87,123.52, 120,272.70 and 58,432.71

Step by Step Solution

1. Step 1: Write the proportion equation
   87,123.52 : 120,272.70 = 58,432.71 : x
2. Step 2: Convert to fraction form
   87,123.52/120,272.70 = 58,432.71/x
3. Step 3: Cross multiply
   87,123.52x = 120,272.70 × 58,432.71
4. Step 4: Simplify right side
   87,123.52x = 7,027,859,800.02
5. Step 5: Solve for x
   x = 7,027,859,800.02/87,123.52
6. Step 6: Final answer
   x = 80,665.47