Finding the Fourth Proportional to 99,693.82, 137,573.67 and 54,981.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,693.82 : 137,573.67 = 54,981.82 : x
2. Step 2: Convert to fraction form
   99,693.82/137,573.67 = 54,981.82/x
3. Step 3: Cross multiply
   99,693.82x = 137,573.67 × 54,981.82
4. Step 4: Simplify right side
   99,693.82x = 7,564,050,760.68
5. Step 5: Solve for x
   x = 7,564,050,760.68/99,693.82
6. Step 6: Final answer
   x = 75,872.81