Finding the Fourth Proportional to 142,329.46, 196,414.69 and 78,667.26

Step by Step Solution

1. Step 1: Write the proportion equation
   142,329.46 : 196,414.69 = 78,667.26 : x
2. Step 2: Convert to fraction form
   142,329.46/196,414.69 = 78,667.26/x
3. Step 3: Cross multiply
   142,329.46x = 196,414.69 × 78,667.26
4. Step 4: Simplify right side
   142,329.46x = 15,451,405,486.05
5. Step 5: Solve for x
   x = 15,451,405,486.05/142,329.46
6. Step 6: Final answer
   x = 108,560.84