Finding the Fourth Proportional to 31,389.49, 43,317.53 and 17,243.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,389.49 : 43,317.53 = 17,243.25 : x
2. Step 2: Convert to fraction form
   31,389.49/43,317.53 = 17,243.25/x
3. Step 3: Cross multiply
   31,389.49x = 43,317.53 × 17,243.25
4. Step 4: Simplify right side
   31,389.49x = 746,934,999.17
5. Step 5: Solve for x
   x = 746,934,999.17/31,389.49
6. Step 6: Final answer
   x = 23,795.70