Finding the Fourth Proportional to 83,842.38, 115,663.61 and 49,831.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,842.38 : 115,663.61 = 49,831.80 : x
2. Step 2: Convert to fraction form
   83,842.38/115,663.61 = 49,831.80/x
3. Step 3: Cross multiply
   83,842.38x = 115,663.61 × 49,831.80
4. Step 4: Simplify right side
   83,842.38x = 5,763,725,880.80
5. Step 5: Solve for x
   x = 5,763,725,880.80/83,842.38
6. Step 6: Final answer
   x = 68,744.78