Finding the Fourth Proportional to 99,702.86, 137,591.59 and 54,380.84

Step by Step Solution

1. Step 1: Write the proportion equation
   99,702.86 : 137,591.59 = 54,380.84 : x
2. Step 2: Convert to fraction form
   99,702.86/137,591.59 = 54,380.84/x
3. Step 3: Cross multiply
   99,702.86x = 137,591.59 × 54,380.84
4. Step 4: Simplify right side
   99,702.86x = 7,482,346,449.16
5. Step 5: Solve for x
   x = 7,482,346,449.16/99,702.86
6. Step 6: Final answer
   x = 75,046.46