Finding the Fourth Proportional to 142,605.21, 196,815.78 and 82,164.27

Step by Step Solution

1. Step 1: Write the proportion equation
   142,605.21 : 196,815.78 = 82,164.27 : x
2. Step 2: Convert to fraction form
   142,605.21/196,815.78 = 82,164.27/x
3. Step 3: Cross multiply
   142,605.21x = 196,815.78 × 82,164.27
4. Step 4: Simplify right side
   142,605.21x = 16,171,224,888.18
5. Step 5: Solve for x
   x = 16,171,224,888.18/142,605.21
6. Step 6: Final answer
   x = 113,398.56