Finding the Fourth Proportional to 161,321.82, 242,031.96 and 82,491.42

Step by Step Solution

1. Step 1: Write the proportion equation
   161,321.82 : 242,031.96 = 82,491.42 : x
2. Step 2: Convert to fraction form
   161,321.82/242,031.96 = 82,491.42/x
3. Step 3: Cross multiply
   161,321.82x = 242,031.96 × 82,491.42
4. Step 4: Simplify right side
   161,321.82x = 19,965,560,065.78
5. Step 5: Solve for x
   x = 19,965,560,065.78/161,321.82
6. Step 6: Final answer
   x = 123,762.30