Finding the Fourth Proportional to 142,104.60, 196,108.56 and 78,446.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142,104.60 : 196,108.56 = 78,446.52 : x
2. Step 2: Convert to fraction form
   142,104.60/196,108.56 = 78,446.52/x
3. Step 3: Cross multiply
   142,104.60x = 196,108.56 × 78,446.52
4. Step 4: Simplify right side
   142,104.60x = 15,384,034,074.21
5. Step 5: Solve for x
   x = 15,384,034,074.21/142,104.60
6. Step 6: Final answer
   x = 108,258.52