Finding the Fourth Proportional to 31,104.03, 42,924 and 16,956.87

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.03 : 42,924 = 16,956.87 : x
2. Step 2: Convert to fraction form
   31,104.03/42,924 = 16,956.87/x
3. Step 3: Cross multiply
   31,104.03x = 42,924 × 16,956.87
4. Step 4: Simplify right side
   31,104.03x = 727,856,687.88
5. Step 5: Solve for x
   x = 727,856,687.88/31,104.03
6. Step 6: Final answer
   x = 23,400.72