Finding the Fourth Proportional to 114,793.75, 158,343.89 and 78,921.49

Step by Step Solution

1. Step 1: Write the proportion equation
   114,793.75 : 158,343.89 = 78,921.49 : x
2. Step 2: Convert to fraction form
   114,793.75/158,343.89 = 78,921.49/x
3. Step 3: Cross multiply
   114,793.75x = 158,343.89 × 78,921.49
4. Step 4: Simplify right side
   114,793.75x = 12,496,734,939.48
5. Step 5: Solve for x
   x = 12,496,734,939.48/114,793.75
6. Step 6: Final answer
   x = 108,862.50