Finding the Fourth Proportional to 142,605, 196,846.74 and 82,989

Step by Step Solution

1. Step 1: Write the proportion equation
   142,605 : 196,846.74 = 82,989 : x
2. Step 2: Convert to fraction form
   142,605/196,846.74 = 82,989/x
3. Step 3: Cross multiply
   142,605x = 196,846.74 × 82,989
4. Step 4: Simplify right side
   142,605x = 16,336,114,105.86
5. Step 5: Solve for x
   x = 16,336,114,105.86/142,605
6. Step 6: Final answer
   x = 114,554.99