Finding the Fourth Proportional to 78,111.39, 117,115.25 and 25,502.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,111.39 : 117,115.25 = 25,502.43 : x
2. Step 2: Convert to fraction form
   78,111.39/117,115.25 = 25,502.43/x
3. Step 3: Cross multiply
   78,111.39x = 117,115.25 × 25,502.43
4. Step 4: Simplify right side
   78,111.39x = 2,986,723,337.55
5. Step 5: Solve for x
   x = 2,986,723,337.55/78,111.39
6. Step 6: Final answer
   x = 38,236.72