Finding the Fourth Proportional to 320,826.06, 482,111.46 and 171,172.08

Step by Step Solution

1. Step 1: Write the proportion equation
   320,826.06 : 482,111.46 = 171,172.08 : x
2. Step 2: Convert to fraction form
   320,826.06/482,111.46 = 171,172.08/x
3. Step 3: Cross multiply
   320,826.06x = 482,111.46 × 171,172.08
4. Step 4: Simplify right side
   320,826.06x = 82,524,021,400.04
5. Step 5: Solve for x
   x = 82,524,021,400.04/320,826.06
6. Step 6: Final answer
   x = 257,223.56