Finding the Fourth Proportional to 99,591.52, 137,434.54 and 54,269.83

Step by Step Solution

1. Step 1: Write the proportion equation
   99,591.52 : 137,434.54 = 54,269.83 : x
2. Step 2: Convert to fraction form
   99,591.52/137,434.54 = 54,269.83/x
3. Step 3: Cross multiply
   99,591.52x = 137,434.54 × 54,269.83
4. Step 4: Simplify right side
   99,591.52x = 7,458,549,121.93
5. Step 5: Solve for x
   x = 7,458,549,121.93/99,591.52
6. Step 6: Final answer
   x = 74,891.41