Finding the Fourth Proportional to 31,399.89, 43,331.73 and 17,059.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,399.89 : 43,331.73 = 17,059.62 : x
2. Step 2: Convert to fraction form
   31,399.89/43,331.73 = 17,059.62/x
3. Step 3: Cross multiply
   31,399.89x = 43,331.73 × 17,059.62
4. Step 4: Simplify right side
   31,399.89x = 739,222,847.74
5. Step 5: Solve for x
   x = 739,222,847.74/31,399.89
6. Step 6: Final answer
   x = 23,542.21