Finding the Fourth Proportional to 142,576, 196,806.72 and 82,960

Step by Step Solution

1. Step 1: Write the proportion equation
   142,576 : 196,806.72 = 82,960 : x
2. Step 2: Convert to fraction form
   142,576/196,806.72 = 82,960/x
3. Step 3: Cross multiply
   142,576x = 196,806.72 × 82,960
4. Step 4: Simplify right side
   142,576x = 16,327,085,491.20
5. Step 5: Solve for x
   x = 16,327,085,491.20/142,576
6. Step 6: Final answer
   x = 114,514.96