Finding the Fourth Proportional to 142,594.28, 196,777.72 and 78,930.71

Step by Step Solution

1. Step 1: Write the proportion equation
   142,594.28 : 196,777.72 = 78,930.71 : x
2. Step 2: Convert to fraction form
   142,594.28/196,777.72 = 78,930.71/x
3. Step 3: Cross multiply
   142,594.28x = 196,777.72 × 78,930.71
4. Step 4: Simplify right side
   142,594.28x = 15,531,805,151.78
5. Step 5: Solve for x
   x = 15,531,805,151.78/142,594.28
6. Step 6: Final answer
   x = 108,923.06