Finding the Fourth Proportional to 99,597, 137,442.06 and 54,275.39

Step by Step Solution

1. Step 1: Write the proportion equation
   99,597 : 137,442.06 = 54,275.39 : x
2. Step 2: Convert to fraction form
   99,597/137,442.06 = 54,275.39/x
3. Step 3: Cross multiply
   99,597x = 137,442.06 × 54,275.39
4. Step 4: Simplify right side
   99,597x = 7,459,720,721.69
5. Step 5: Solve for x
   x = 7,459,720,721.69/99,597
6. Step 6: Final answer
   x = 74,899.05