Finding the Fourth Proportional to 321.82, 482.72 and 116.38

Step by Step Solution

1. Step 1: Write the proportion equation
   321.82 : 482.72 = 116.38 : x
2. Step 2: Convert to fraction form
   321.82/482.72 = 116.38/x
3. Step 3: Cross multiply
   321.82x = 482.72 × 116.38
4. Step 4: Simplify right side
   321.82x = 56,181.31
5. Step 5: Solve for x
   x = 56,181.31/321.82
6. Step 6: Final answer
   x = 174.58