Finding the Fourth Proportional to 31,104, 42,923.61 and 16,956.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104 : 42,923.61 = 16,956.54 : x
2. Step 2: Convert to fraction form
   31,104/42,923.61 = 16,956.54/x
3. Step 3: Cross multiply
   31,104x = 42,923.61 × 16,956.54
4. Step 4: Simplify right side
   31,104x = 727,835,909.91
5. Step 5: Solve for x
   x = 727,835,909.91/31,104
6. Step 6: Final answer
   x = 23,400.07