Finding the Fourth Proportional to 142,581.82, 196,763.09 and 88,866.79

Step by Step Solution

1. Step 1: Write the proportion equation
   142,581.82 : 196,763.09 = 88,866.79 : x
2. Step 2: Convert to fraction form
   142,581.82/196,763.09 = 88,866.79/x
3. Step 3: Cross multiply
   142,581.82x = 196,763.09 × 88,866.79
4. Step 4: Simplify right side
   142,581.82x = 17,485,704,198.78
5. Step 5: Solve for x
   x = 17,485,704,198.78/142,581.82
6. Step 6: Final answer
   x = 122,636.28