Finding the Fourth Proportional to 87,456.32, 131,288.72 and 83,891.52

Step by Step Solution

1. Step 1: Write the proportion equation
   87,456.32 : 131,288.72 = 83,891.52 : x
2. Step 2: Convert to fraction form
   87,456.32/131,288.72 = 83,891.52/x
3. Step 3: Cross multiply
   87,456.32x = 131,288.72 × 83,891.52
4. Step 4: Simplify right side
   87,456.32x = 11,014,010,279.65
5. Step 5: Solve for x
   x = 11,014,010,279.65/87,456.32
6. Step 6: Final answer
   x = 125,937.27