Finding the Fourth Proportional to 105,831.38, 146,036.67 and 63,388.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,831.38 : 146,036.67 = 63,388.82 : x
2. Step 2: Convert to fraction form
   105,831.38/146,036.67 = 63,388.82/x
3. Step 3: Cross multiply
   105,831.38x = 146,036.67 × 63,388.82
4. Step 4: Simplify right side
   105,831.38x = 9,257,092,188.03
5. Step 5: Solve for x
   x = 9,257,092,188.03/105,831.38
6. Step 6: Final answer
   x = 87,470.20