Finding the Fourth Proportional to 87,603.59, 131,426.04 and 28,434.71

Step by Step Solution

1. Step 1: Write the proportion equation
   87,603.59 : 131,426.04 = 28,434.71 : x
2. Step 2: Convert to fraction form
   87,603.59/131,426.04 = 28,434.71/x
3. Step 3: Cross multiply
   87,603.59x = 131,426.04 × 28,434.71
4. Step 4: Simplify right side
   87,603.59x = 3,737,060,676.72
5. Step 5: Solve for x
   x = 3,737,060,676.72/87,603.59
6. Step 6: Final answer
   x = 42,658.76