Finding the Fourth Proportional to 31,155.46, 42,995.27 and 17,008.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,155.46 : 42,995.27 = 17,008.40 : x
2. Step 2: Convert to fraction form
   31,155.46/42,995.27 = 17,008.40/x
3. Step 3: Cross multiply
   31,155.46x = 42,995.27 × 17,008.40
4. Step 4: Simplify right side
   31,155.46x = 731,280,750.27
5. Step 5: Solve for x
   x = 731,280,750.27/31,155.46
6. Step 6: Final answer
   x = 23,471.99