Finding the Fourth Proportional to 142,349.27, 196,434.32 and 78,683.27

Step by Step Solution

1. Step 1: Write the proportion equation
   142,349.27 : 196,434.32 = 78,683.27 : x
2. Step 2: Convert to fraction form
   142,349.27/196,434.32 = 78,683.27/x
3. Step 3: Cross multiply
   142,349.27x = 196,434.32 × 78,683.27
4. Step 4: Simplify right side
   142,349.27x = 15,456,093,262.24
5. Step 5: Solve for x
   x = 15,456,093,262.24/142,349.27
6. Step 6: Final answer
   x = 108,578.67