Finding the Fourth Proportional to 142,323.62, 213,190.16 and 82,979.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,323.62 : 213,190.16 = 82,979.30 : x
2. Step 2: Convert to fraction form
   142,323.62/213,190.16 = 82,979.30/x
3. Step 3: Cross multiply
   142,323.62x = 213,190.16 × 82,979.30
4. Step 4: Simplify right side
   142,323.62x = 17,690,370,243.69
5. Step 5: Solve for x
   x = 17,690,370,243.69/142,323.62
6. Step 6: Final answer
   x = 124,296.80