Finding the Fourth Proportional to 31,110.33, 42,930.71 and 17,679.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,110.33 : 42,930.71 = 17,679.81 : x
2. Step 2: Convert to fraction form
   31,110.33/42,930.71 = 17,679.81/x
3. Step 3: Cross multiply
   31,110.33x = 42,930.71 × 17,679.81
4. Step 4: Simplify right side
   31,110.33x = 759,006,707.57
5. Step 5: Solve for x
   x = 759,006,707.57/31,110.33
6. Step 6: Final answer
   x = 24,397.26