Finding the Fourth Proportional to 105,763.42, 158,504.17 and 55,831.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,763.42 : 158,504.17 = 55,831.78 : x
2. Step 2: Convert to fraction form
   105,763.42/158,504.17 = 55,831.78/x
3. Step 3: Cross multiply
   105,763.42x = 158,504.17 × 55,831.78
4. Step 4: Simplify right side
   105,763.42x = 8,849,569,948.52
5. Step 5: Solve for x
   x = 8,849,569,948.52/105,763.42
6. Step 6: Final answer
   x = 83,673.26