Finding the Fourth Proportional to 78,863.63, 108,831.71 and 50,569.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,863.63 : 108,831.71 = 50,569.25 : x
2. Step 2: Convert to fraction form
   78,863.63/108,831.71 = 50,569.25/x
3. Step 3: Cross multiply
   78,863.63x = 108,831.71 × 50,569.25
4. Step 4: Simplify right side
   78,863.63x = 5,503,537,698.07
5. Step 5: Solve for x
   x = 5,503,537,698.07/78,863.63
6. Step 6: Final answer
   x = 69,785.50