Finding the Fourth Proportional to 78,112.32, 117,168.72 and 25,522.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,112.32 : 117,168.72 = 25,522.20 : x
2. Step 2: Convert to fraction form
   78,112.32/117,168.72 = 25,522.20/x
3. Step 3: Cross multiply
   78,112.32x = 117,168.72 × 25,522.20
4. Step 4: Simplify right side
   78,112.32x = 2,990,403,505.58
5. Step 5: Solve for x
   x = 2,990,403,505.58/78,112.32
6. Step 6: Final answer
   x = 38,283.38