Finding the Fourth Proportional to 142,723.34, 196,949.74 and 78,179.67

Step by Step Solution

1. Step 1: Write the proportion equation
   142,723.34 : 196,949.74 = 78,179.67 : x
2. Step 2: Convert to fraction form
   142,723.34/196,949.74 = 78,179.67/x
3. Step 3: Cross multiply
   142,723.34x = 196,949.74 × 78,179.67
4. Step 4: Simplify right side
   142,723.34x = 15,397,465,484.34
5. Step 5: Solve for x
   x = 15,397,465,484.34/142,723.34
6. Step 6: Final answer
   x = 107,883.31