Finding the Fourth Proportional to 31,118.43, 42,942.92 and 16,970.43

Step by Step Solution

1. Step 1: Write the proportion equation
   31,118.43 : 42,942.92 = 16,970.43 : x
2. Step 2: Convert to fraction form
   31,118.43/42,942.92 = 16,970.43/x
3. Step 3: Cross multiply
   31,118.43x = 42,942.92 × 16,970.43
4. Step 4: Simplify right side
   31,118.43x = 728,759,733.00
5. Step 5: Solve for x
   x = 728,759,733.00/31,118.43
6. Step 6: Final answer
   x = 23,418.91