Finding the Fourth Proportional to 31,418.52, 43,357.88 and 17,078.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,418.52 : 43,357.88 = 17,078.42 : x
2. Step 2: Convert to fraction form
   31,418.52/43,357.88 = 17,078.42/x
3. Step 3: Cross multiply
   31,418.52x = 43,357.88 × 17,078.42
4. Step 4: Simplify right side
   31,418.52x = 740,484,084.95
5. Step 5: Solve for x
   x = 740,484,084.95/31,418.52
6. Step 6: Final answer
   x = 23,568.39