Finding the Fourth Proportional to 99,793.34, 137,718.87 and 54,474.38

Step by Step Solution

1. Step 1: Write the proportion equation
   99,793.34 : 137,718.87 = 54,474.38 : x
2. Step 2: Convert to fraction form
   99,793.34/137,718.87 = 54,474.38/x
3. Step 3: Cross multiply
   99,793.34x = 137,718.87 × 54,474.38
4. Step 4: Simplify right side
   99,793.34x = 7,502,150,057.55
5. Step 5: Solve for x
   x = 7,502,150,057.55/99,793.34
6. Step 6: Final answer
   x = 75,176.86