Finding the Fourth Proportional to 142,831.62, 197,100.54 and 79,168.86

Step by Step Solution

1. Step 1: Write the proportion equation
   142,831.62 : 197,100.54 = 79,168.86 : x
2. Step 2: Convert to fraction form
   142,831.62/197,100.54 = 79,168.86/x
3. Step 3: Cross multiply
   142,831.62x = 197,100.54 × 79,168.86
4. Step 4: Simplify right side
   142,831.62x = 15,604,225,057.18
5. Step 5: Solve for x
   x = 15,604,225,057.18/142,831.62
6. Step 6: Final answer
   x = 109,249.09