Finding the Fourth Proportional to 315,233.25, 435,023.31 and 171,996.31

Step by Step Solution

1. Step 1: Write the proportion equation
   315,233.25 : 435,023.31 = 171,996.31 : x
2. Step 2: Convert to fraction form
   315,233.25/435,023.31 = 171,996.31/x
3. Step 3: Cross multiply
   315,233.25x = 435,023.31 × 171,996.31
4. Step 4: Simplify right side
   315,233.25x = 74,822,404,083.99
5. Step 5: Solve for x
   x = 74,822,404,083.99/315,233.25
6. Step 6: Final answer
   x = 237,355.69