Finding the Fourth Proportional to 31,108.76, 42,931.10 and 17,499.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,108.76 : 42,931.10 = 17,499.16 : x
2. Step 2: Convert to fraction form
   31,108.76/42,931.10 = 17,499.16/x
3. Step 3: Cross multiply
   31,108.76x = 42,931.10 × 17,499.16
4. Step 4: Simplify right side
   31,108.76x = 751,258,100.38
5. Step 5: Solve for x
   x = 751,258,100.38/31,108.76
6. Step 6: Final answer
   x = 24,149.41