Finding the Fourth Proportional to 78,940.15, 118,425.78 and 25,622.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,940.15 : 118,425.78 = 25,622.17 : x
2. Step 2: Convert to fraction form
   78,940.15/118,425.78 = 25,622.17/x
3. Step 3: Cross multiply
   78,940.15x = 118,425.78 × 25,622.17
4. Step 4: Simplify right side
   78,940.15x = 3,034,325,467.54
5. Step 5: Solve for x
   x = 3,034,325,467.54/78,940.15
6. Step 6: Final answer
   x = 38,438.30