Finding the Fourth Proportional to 142,076.79, 196,065.56 and 78,414.13

Step by Step Solution

1. Step 1: Write the proportion equation
   142,076.79 : 196,065.56 = 78,414.13 : x
2. Step 2: Convert to fraction form
   142,076.79/196,065.56 = 78,414.13/x
3. Step 3: Cross multiply
   142,076.79x = 196,065.56 × 78,414.13
4. Step 4: Simplify right side
   142,076.79x = 15,374,309,330.04
5. Step 5: Solve for x
   x = 15,374,309,330.04/142,076.79
6. Step 6: Final answer
   x = 108,211.27