Finding the Fourth Proportional to 142,350.27, 196,435.69 and 78,684.27

Step by Step Solution

1. Step 1: Write the proportion equation
   142,350.27 : 196,435.69 = 78,684.27 : x
2. Step 2: Convert to fraction form
   142,350.27/196,435.69 = 78,684.27/x
3. Step 3: Cross multiply
   142,350.27x = 196,435.69 × 78,684.27
4. Step 4: Simplify right side
   142,350.27x = 15,456,398,869.60
5. Step 5: Solve for x
   x = 15,456,398,869.60/142,350.27
6. Step 6: Final answer
   x = 108,580.05