Finding the Fourth Proportional to 31,287.04, 43,179.21 and 17,860.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,287.04 : 43,179.21 = 17,860.31 : x
2. Step 2: Convert to fraction form
   31,287.04/43,179.21 = 17,860.31/x
3. Step 3: Cross multiply
   31,287.04x = 43,179.21 × 17,860.31
4. Step 4: Simplify right side
   31,287.04x = 771,194,076.16
5. Step 5: Solve for x
   x = 771,194,076.16/31,287.04
6. Step 6: Final answer
   x = 24,648.99