Finding the Fourth Proportional to 99,695.46, 137,508.72 and 96,400.38

Step by Step Solution

1. Step 1: Write the proportion equation
   99,695.46 : 137,508.72 = 96,400.38 : x
2. Step 2: Convert to fraction form
   99,695.46/137,508.72 = 96,400.38/x
3. Step 3: Cross multiply
   99,695.46x = 137,508.72 × 96,400.38
4. Step 4: Simplify right side
   99,695.46x = 13,255,892,861.31
5. Step 5: Solve for x
   x = 13,255,892,861.31/99,695.46
6. Step 6: Final answer
   x = 132,963.86