Finding the Fourth Proportional to 31,398.31, 43,329.54 and 17,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,398.31 : 43,329.54 = 17,969.50 : x
2. Step 2: Convert to fraction form
   31,398.31/43,329.54 = 17,969.50/x
3. Step 3: Cross multiply
   31,398.31x = 43,329.54 × 17,969.50
4. Step 4: Simplify right side
   31,398.31x = 778,610,169.03
5. Step 5: Solve for x
   x = 778,610,169.03/31,398.31
6. Step 6: Final answer
   x = 24,797.84