Finding the Fourth Proportional to 320,839.31, 482,131.34 and 171,185.33

Step by Step Solution

1. Step 1: Write the proportion equation
   320,839.31 : 482,131.34 = 171,185.33 : x
2. Step 2: Convert to fraction form
   320,839.31/482,131.34 = 171,185.33/x
3. Step 3: Cross multiply
   320,839.31x = 482,131.34 × 171,185.33
4. Step 4: Simplify right side
   320,839.31x = 82,533,812,541.24
5. Step 5: Solve for x
   x = 82,533,812,541.24/320,839.31
6. Step 6: Final answer
   x = 257,243.45