Finding the Fourth Proportional to 142,605.50, 196,847.43 and 82,989.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,605.50 : 196,847.43 = 82,989.50 : x
2. Step 2: Convert to fraction form
   142,605.50/196,847.43 = 82,989.50/x
3. Step 3: Cross multiply
   142,605.50x = 196,847.43 × 82,989.50
4. Step 4: Simplify right side
   142,605.50x = 16,336,269,791.99
5. Step 5: Solve for x
   x = 16,336,269,791.99/142,605.50
6. Step 6: Final answer
   x = 114,555.68