Finding the Fourth Proportional to 215,886.50, 323,831.82 and 82,735.10

Step by Step Solution

1. Step 1: Write the proportion equation
   215,886.50 : 323,831.82 = 82,735.10 : x
2. Step 2: Convert to fraction form
   215,886.50/323,831.82 = 82,735.10/x
3. Step 3: Cross multiply
   215,886.50x = 323,831.82 × 82,735.10
4. Step 4: Simplify right side
   215,886.50x = 26,792,258,010.88
5. Step 5: Solve for x
   x = 26,792,258,010.88/215,886.50
6. Step 6: Final answer
   x = 124,103.44