Finding the Fourth Proportional to 99,719.83, 137,614.17 and 54,398.17

Step by Step Solution

1. Step 1: Write the proportion equation
   99,719.83 : 137,614.17 = 54,398.17 : x
2. Step 2: Convert to fraction form
   99,719.83/137,614.17 = 54,398.17/x
3. Step 3: Cross multiply
   99,719.83x = 137,614.17 × 54,398.17
4. Step 4: Simplify right side
   99,719.83x = 7,485,959,014.07
5. Step 5: Solve for x
   x = 7,485,959,014.07/99,719.83
6. Step 6: Final answer
   x = 75,069.91