Finding the Fourth Proportional to 142,109.56, 213,175.68 and 82,951.21

Step by Step Solution

1. Step 1: Write the proportion equation
   142,109.56 : 213,175.68 = 82,951.21 : x
2. Step 2: Convert to fraction form
   142,109.56/213,175.68 = 82,951.21/x
3. Step 3: Cross multiply
   142,109.56x = 213,175.68 × 82,951.21
4. Step 4: Simplify right side
   142,109.56x = 17,683,180,598.57
5. Step 5: Solve for x
   x = 17,683,180,598.57/142,109.56
6. Step 6: Final answer
   x = 124,433.43