Finding the Fourth Proportional to 99,344.83, 137,086.05 and 56,315.83

Step by Step Solution

1. Step 1: Write the proportion equation
   99,344.83 : 137,086.05 = 56,315.83 : x
2. Step 2: Convert to fraction form
   99,344.83/137,086.05 = 56,315.83/x
3. Step 3: Cross multiply
   99,344.83x = 137,086.05 × 56,315.83
4. Step 4: Simplify right side
   99,344.83x = 7,720,114,687.17
5. Step 5: Solve for x
   x = 7,720,114,687.17/99,344.83
6. Step 6: Final answer
   x = 77,710.28