Finding the Fourth Proportional to 31,487.31, 43,452.78 and 17,340.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,487.31 : 43,452.78 = 17,340.25 : x
2. Step 2: Convert to fraction form
   31,487.31/43,452.78 = 17,340.25/x
3. Step 3: Cross multiply
   31,487.31x = 43,452.78 × 17,340.25
4. Step 4: Simplify right side
   31,487.31x = 753,481,981.69
5. Step 5: Solve for x
   x = 753,481,981.69/31,487.31
6. Step 6: Final answer
   x = 23,929.71