Finding the Fourth Proportional to 142,219.78, 196,253.31 and 78,552.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,219.78 : 196,253.31 = 78,552.56 : x
2. Step 2: Convert to fraction form
   142,219.78/196,253.31 = 78,552.56/x
3. Step 3: Cross multiply
   142,219.78x = 196,253.31 × 78,552.56
4. Step 4: Simplify right side
   142,219.78x = 15,416,200,694.18
5. Step 5: Solve for x
   x = 15,416,200,694.18/142,219.78
6. Step 6: Final answer
   x = 108,397.02