Finding the Fourth Proportional to 99,345.34, 137,093.88 and 56,332.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,345.34 : 137,093.88 = 56,332.72 : x
2. Step 2: Convert to fraction form
   99,345.34/137,093.88 = 56,332.72/x
3. Step 3: Cross multiply
   99,345.34x = 137,093.88 × 56,332.72
4. Step 4: Simplify right side
   99,345.34x = 7,722,871,155.75
5. Step 5: Solve for x
   x = 7,722,871,155.75/99,345.34
6. Step 6: Final answer
   x = 77,737.63