Finding the Fourth Proportional to 99,831.96, 137,768.38 and 54,510.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,831.96 : 137,768.38 = 54,510.32 : x
2. Step 2: Convert to fraction form
   99,831.96/137,768.38 = 54,510.32/x
3. Step 3: Cross multiply
   99,831.96x = 137,768.38 × 54,510.32
4. Step 4: Simplify right side
   99,831.96x = 7,509,798,687.83
5. Step 5: Solve for x
   x = 7,509,798,687.83/99,831.96
6. Step 6: Final answer
   x = 75,224.39