Finding the Fourth Proportional to 99,442.58, 137,233.29 and 54,123.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,442.58 : 137,233.29 = 54,123.02 : x
2. Step 2: Convert to fraction form
   99,442.58/137,233.29 = 54,123.02/x
3. Step 3: Cross multiply
   99,442.58x = 137,233.29 × 54,123.02
4. Step 4: Simplify right side
   99,442.58x = 7,427,480,099.34
5. Step 5: Solve for x
   x = 7,427,480,099.34/99,442.58
6. Step 6: Final answer
   x = 74,691.14