Finding the Fourth Proportional to 142,275.69, 196,340.05 and 78,613.03

Step by Step Solution

1. Step 1: Write the proportion equation
   142,275.69 : 196,340.05 = 78,613.03 : x
2. Step 2: Convert to fraction form
   142,275.69/196,340.05 = 78,613.03/x
3. Step 3: Cross multiply
   142,275.69x = 196,340.05 × 78,613.03
4. Step 4: Simplify right side
   142,275.69x = 15,434,886,584.54
5. Step 5: Solve for x
   x = 15,434,886,584.54/142,275.69
6. Step 6: Final answer
   x = 108,485.76