Finding the Fourth Proportional to 78,870.76, 108,854.15 and 50,160.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,870.76 : 108,854.15 = 50,160.49 : x
2. Step 2: Convert to fraction form
   78,870.76/108,854.15 = 50,160.49/x
3. Step 3: Cross multiply
   78,870.76x = 108,854.15 × 50,160.49
4. Step 4: Simplify right side
   78,870.76x = 5,460,177,502.53
5. Step 5: Solve for x
   x = 5,460,177,502.53/78,870.76
6. Step 6: Final answer
   x = 69,229.43