Finding the Fourth Proportional to 99,505.43, 137,083.88 and 69,238.77

Step by Step Solution

1. Step 1: Write the proportion equation
   99,505.43 : 137,083.88 = 69,238.77 : x
2. Step 2: Convert to fraction form
   99,505.43/137,083.88 = 69,238.77/x
3. Step 3: Cross multiply
   99,505.43x = 137,083.88 × 69,238.77
4. Step 4: Simplify right side
   99,505.43x = 9,491,518,891.83
5. Step 5: Solve for x
   x = 9,491,518,891.83/99,505.43
6. Step 6: Final answer
   x = 95,386.95