Finding the Fourth Proportional to 31,103.39, 42,922.58 and 16,956.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.39 : 42,922.58 = 16,956.24 : x
2. Step 2: Convert to fraction form
   31,103.39/42,922.58 = 16,956.24/x
3. Step 3: Cross multiply
   31,103.39x = 42,922.58 × 16,956.24
4. Step 4: Simplify right side
   31,103.39x = 727,805,567.90
5. Step 5: Solve for x
   x = 727,805,567.90/31,103.39
6. Step 6: Final answer
   x = 23,399.56