Finding the Fourth Proportional to 99,499.86, 137,309.13 and 54,177.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,499.86 : 137,309.13 = 54,177.82 : x
2. Step 2: Convert to fraction form
   99,499.86/137,309.13 = 54,177.82/x
3. Step 3: Cross multiply
   99,499.86x = 137,309.13 × 54,177.82
4. Step 4: Simplify right side
   99,499.86x = 7,439,108,986.22
5. Step 5: Solve for x
   x = 7,439,108,986.22/99,499.86
6. Step 6: Final answer
   x = 74,765.02