Finding the Fourth Proportional to 31,258.91, 43,137.31 and 17,111.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,258.91 : 43,137.31 = 17,111.75 : x
2. Step 2: Convert to fraction form
   31,258.91/43,137.31 = 17,111.75/x
3. Step 3: Cross multiply
   31,258.91x = 43,137.31 × 17,111.75
4. Step 4: Simplify right side
   31,258.91x = 738,154,864.39
5. Step 5: Solve for x
   x = 738,154,864.39/31,258.91
6. Step 6: Final answer
   x = 23,614.23