Finding the Fourth Proportional to 150,831.98, 208,142.43 and 83,768.30

Step by Step Solution

1. Step 1: Write the proportion equation
   150,831.98 : 208,142.43 = 83,768.30 : x
2. Step 2: Convert to fraction form
   150,831.98/208,142.43 = 83,768.30/x
3. Step 3: Cross multiply
   150,831.98x = 208,142.43 × 83,768.30
4. Step 4: Simplify right side
   150,831.98x = 17,435,737,518.97
5. Step 5: Solve for x
   x = 17,435,737,518.97/150,831.98
6. Step 6: Final answer
   x = 115,597.09