Finding the Fourth Proportional to 99,386.34, 137,150.46 and 56,373.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,386.34 : 137,150.46 = 56,373.72 : x
2. Step 2: Convert to fraction form
   99,386.34/137,150.46 = 56,373.72/x
3. Step 3: Cross multiply
   99,386.34x = 137,150.46 × 56,373.72
4. Step 4: Simplify right side
   99,386.34x = 7,731,681,629.91
5. Step 5: Solve for x
   x = 7,731,681,629.91/99,386.34
6. Step 6: Final answer
   x = 77,794.21