Finding the Fourth Proportional to 142,275.81, 196,334.37 and 78,612.24

Step by Step Solution

1. Step 1: Write the proportion equation
   142,275.81 : 196,334.37 = 78,612.24 : x
2. Step 2: Convert to fraction form
   142,275.81/196,334.37 = 78,612.24/x
3. Step 3: Cross multiply
   142,275.81x = 196,334.37 × 78,612.24
4. Step 4: Simplify right side
   142,275.81x = 15,434,284,614.69
5. Step 5: Solve for x
   x = 15,434,284,614.69/142,275.81
6. Step 6: Final answer
   x = 108,481.44