Finding the Fourth Proportional to 87,947.30, 131,726.55 and 72,395.30

Step by Step Solution

1. Step 1: Write the proportion equation
   87,947.30 : 131,726.55 = 72,395.30 : x
2. Step 2: Convert to fraction form
   87,947.30/131,726.55 = 72,395.30/x
3. Step 3: Cross multiply
   87,947.30x = 131,726.55 × 72,395.30
4. Step 4: Simplify right side
   87,947.30x = 9,536,383,105.22
5. Step 5: Solve for x
   x = 9,536,383,105.22/87,947.30
6. Step 6: Final answer
   x = 108,432.93