Finding the Fourth Proportional to 142,723.91, 196,971 and 79,067.63

Step by Step Solution

1. Step 1: Write the proportion equation
   142,723.91 : 196,971 = 79,067.63 : x
2. Step 2: Convert to fraction form
   142,723.91/196,971 = 79,067.63/x
3. Step 3: Cross multiply
   142,723.91x = 196,971 × 79,067.63
4. Step 4: Simplify right side
   142,723.91x = 15,574,030,148.73
5. Step 5: Solve for x
   x = 15,574,030,148.73/142,723.91
6. Step 6: Final answer
   x = 109,119.98