Finding the Fourth Proportional to 103,686.52, 143,131.54 and 69,714.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,686.52 : 143,131.54 = 69,714.72 : x
2. Step 2: Convert to fraction form
   103,686.52/143,131.54 = 69,714.72/x
3. Step 3: Cross multiply
   103,686.52x = 143,131.54 × 69,714.72
4. Step 4: Simplify right side
   103,686.52x = 9,978,375,234.27
5. Step 5: Solve for x
   x = 9,978,375,234.27/103,686.52
6. Step 6: Final answer
   x = 96,235.99