Finding the Fourth Proportional to 142,366.72, 196,451.04 and 78,694.24

Step by Step Solution

1. Step 1: Write the proportion equation
   142,366.72 : 196,451.04 = 78,694.24 : x
2. Step 2: Convert to fraction form
   142,366.72/196,451.04 = 78,694.24/x
3. Step 3: Cross multiply
   142,366.72x = 196,451.04 × 78,694.24
4. Step 4: Simplify right side
   142,366.72x = 15,459,565,290.01
5. Step 5: Solve for x
   x = 15,459,565,290.01/142,366.72
6. Step 6: Final answer
   x = 108,589.74