Finding the Fourth Proportional to 142,326.14, 196,403.01 and 78,662.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,326.14 : 196,403.01 = 78,662.30 : x
2. Step 2: Convert to fraction form
   142,326.14/196,403.01 = 78,662.30/x
3. Step 3: Cross multiply
   142,326.14x = 196,403.01 × 78,662.30
4. Step 4: Simplify right side
   142,326.14x = 15,449,512,493.52
5. Step 5: Solve for x
   x = 15,449,512,493.52/142,326.14
6. Step 6: Final answer
   x = 108,550.07