Finding the Fourth Proportional to 103,658.72, 143,108.52 and 69,716.48

Step by Step Solution

1. Step 1: Write the proportion equation
   103,658.72 : 143,108.52 = 69,716.48 : x
2. Step 2: Convert to fraction form
   103,658.72/143,108.52 = 69,716.48/x
3. Step 3: Cross multiply
   103,658.72x = 143,108.52 × 69,716.48
4. Step 4: Simplify right side
   103,658.72x = 9,977,022,272.41
5. Step 5: Solve for x
   x = 9,977,022,272.41/103,658.72
6. Step 6: Final answer
   x = 96,248.75