Finding the Fourth Proportional to 31,103.52, 42,923.48 and 16,956.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.52 : 42,923.48 = 16,956.36 : x
2. Step 2: Convert to fraction form
   31,103.52/42,923.48 = 16,956.36/x
3. Step 3: Cross multiply
   31,103.52x = 42,923.48 × 16,956.36
4. Step 4: Simplify right side
   31,103.52x = 727,825,979.33
5. Step 5: Solve for x
   x = 727,825,979.33/31,103.52
6. Step 6: Final answer
   x = 23,400.12