Finding the Fourth Proportional to 99,597.92, 137,443.32 and 54,276.28

Step by Step Solution

1. Step 1: Write the proportion equation
   99,597.92 : 137,443.32 = 54,276.28 : x
2. Step 2: Convert to fraction form
   99,597.92/137,443.32 = 54,276.28/x
3. Step 3: Cross multiply
   99,597.92x = 137,443.32 × 54,276.28
4. Step 4: Simplify right side
   99,597.92x = 7,459,912,120.45
5. Step 5: Solve for x
   x = 7,459,912,120.45/99,597.92
6. Step 6: Final answer
   x = 74,900.28