Finding the Fourth Proportional to 78,868.43, 108,821.81 and 50,177.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,868.43 : 108,821.81 = 50,177.73 : x
2. Step 2: Convert to fraction form
   78,868.43/108,821.81 = 50,177.73/x
3. Step 3: Cross multiply
   78,868.43x = 108,821.81 × 50,177.73
4. Step 4: Simplify right side
   78,868.43x = 5,460,431,149.40
5. Step 5: Solve for x
   x = 5,460,431,149.40/78,868.43
6. Step 6: Final answer
   x = 69,234.69