Finding the Fourth Proportional to 99,833.55, 137,766.67 and 54,510.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,833.55 : 137,766.67 = 54,510.72 : x
2. Step 2: Convert to fraction form
   99,833.55/137,766.67 = 54,510.72/x
3. Step 3: Cross multiply
   99,833.55x = 137,766.67 × 54,510.72
4. Step 4: Simplify right side
   99,833.55x = 7,509,760,373.70
5. Step 5: Solve for x
   x = 7,509,760,373.70/99,833.55
6. Step 6: Final answer
   x = 75,222.81