Finding the Fourth Proportional to 82,831.86, 124,196.94 and 40,658.40

Step by Step Solution

1. Step 1: Write the proportion equation
   82,831.86 : 124,196.94 = 40,658.40 : x
2. Step 2: Convert to fraction form
   82,831.86/124,196.94 = 40,658.40/x
3. Step 3: Cross multiply
   82,831.86x = 124,196.94 × 40,658.40
4. Step 4: Simplify right side
   82,831.86x = 5,049,648,865.30
5. Step 5: Solve for x
   x = 5,049,648,865.30/82,831.86
6. Step 6: Final answer
   x = 60,962.64