Finding the Fourth Proportional to 99,265.58, 137,002.83 and 72,496.70

Step by Step Solution

1. Step 1: Write the proportion equation
   99,265.58 : 137,002.83 = 72,496.70 : x
2. Step 2: Convert to fraction form
   99,265.58/137,002.83 = 72,496.70/x
3. Step 3: Cross multiply
   99,265.58x = 137,002.83 × 72,496.70
4. Step 4: Simplify right side
   99,265.58x = 9,932,253,065.66
5. Step 5: Solve for x
   x = 9,932,253,065.66/99,265.58
6. Step 6: Final answer
   x = 100,057.37