Finding the Fourth Proportional to 322,085.98, 483,092.04 and 85,447.12

Step by Step Solution

1. Step 1: Write the proportion equation
   322,085.98 : 483,092.04 = 85,447.12 : x
2. Step 2: Convert to fraction form
   322,085.98/483,092.04 = 85,447.12/x
3. Step 3: Cross multiply
   322,085.98x = 483,092.04 × 85,447.12
4. Step 4: Simplify right side
   322,085.98x = 41,278,823,512.92
5. Step 5: Solve for x
   x = 41,278,823,512.92/322,085.98
6. Step 6: Final answer
   x = 128,160.88