Finding the Fourth Proportional to 31,104.10, 42,923.55 and 16,956.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.10 : 42,923.55 = 16,956.94 : x
2. Step 2: Convert to fraction form
   31,104.10/42,923.55 = 16,956.94/x
3. Step 3: Cross multiply
   31,104.10x = 42,923.55 × 16,956.94
4. Step 4: Simplify right side
   31,104.10x = 727,852,061.94
5. Step 5: Solve for x
   x = 727,852,061.94/31,104.10
6. Step 6: Final answer
   x = 23,400.52