Finding the Fourth Proportional to 99,763.83, 137,674.89 and 54,442.17

Step by Step Solution

1. Step 1: Write the proportion equation
   99,763.83 : 137,674.89 = 54,442.17 : x
2. Step 2: Convert to fraction form
   99,763.83/137,674.89 = 54,442.17/x
3. Step 3: Cross multiply
   99,763.83x = 137,674.89 × 54,442.17
4. Step 4: Simplify right side
   99,763.83x = 7,495,319,766.11
5. Step 5: Solve for x
   x = 7,495,319,766.11/99,763.83
6. Step 6: Final answer
   x = 75,130.63