Finding the Fourth Proportional to 31,787.31, 43,865.00 and 17,640.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,787.31 : 43,865.00 = 17,640.03 : x
2. Step 2: Convert to fraction form
   31,787.31/43,865.00 = 17,640.03/x
3. Step 3: Cross multiply
   31,787.31x = 43,865.00 × 17,640.03
4. Step 4: Simplify right side
   31,787.31x = 773,779,740.73
5. Step 5: Solve for x
   x = 773,779,740.73/31,787.31
6. Step 6: Final answer
   x = 24,342.41