Finding the Fourth Proportional to 99,443.08, 137,233.98 and 54,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,443.08 : 137,233.98 = 54,123.52 : x
2. Step 2: Convert to fraction form
   99,443.08/137,233.98 = 54,123.52/x
3. Step 3: Cross multiply
   99,443.08x = 137,233.98 × 54,123.52
4. Step 4: Simplify right side
   99,443.08x = 7,427,586,061.21
5. Step 5: Solve for x
   x = 7,427,586,061.21/99,443.08
6. Step 6: Final answer
   x = 74,691.83