Finding the Fourth Proportional to 31,490.50, 43,456.90 and 17,343.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,490.50 : 43,456.90 = 17,343.32 : x
2. Step 2: Convert to fraction form
   31,490.50/43,456.90 = 17,343.32/x
3. Step 3: Cross multiply
   31,490.50x = 43,456.90 × 17,343.32
4. Step 4: Simplify right side
   31,490.50x = 753,686,922.91
5. Step 5: Solve for x
   x = 753,686,922.91/31,490.50
6. Step 6: Final answer
   x = 23,933.79