Finding the Fourth Proportional to 31,318.56, 43,219.31 and 17,171.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,318.56 : 43,219.31 = 17,171.37 : x
2. Step 2: Convert to fraction form
   31,318.56/43,219.31 = 17,171.37/x
3. Step 3: Cross multiply
   31,318.56x = 43,219.31 × 17,171.37
4. Step 4: Simplify right side
   31,318.56x = 742,134,677.30
5. Step 5: Solve for x
   x = 742,134,677.30/31,318.56
6. Step 6: Final answer
   x = 23,696.32