Finding the Fourth Proportional to 31,103.25, 42,922.56 and 16,956.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.25 : 42,922.56 = 16,956.06 : x
2. Step 2: Convert to fraction form
   31,103.25/42,922.56 = 16,956.06/x
3. Step 3: Cross multiply
   31,103.25x = 42,922.56 × 16,956.06
4. Step 4: Simplify right side
   31,103.25x = 727,797,502.71
5. Step 5: Solve for x
   x = 727,797,502.71/31,103.25
6. Step 6: Final answer
   x = 23,399.40