Finding the Fourth Proportional to 103,700.52, 143,150.86 and 69,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,700.52 : 143,150.86 = 69,728.72 : x
2. Step 2: Convert to fraction form
   103,700.52/143,150.86 = 69,728.72/x
3. Step 3: Cross multiply
   103,700.52x = 143,150.86 × 69,728.72
4. Step 4: Simplify right side
   103,700.52x = 9,981,726,234.70
5. Step 5: Solve for x
   x = 9,981,726,234.70/103,700.52
6. Step 6: Final answer
   x = 96,255.32