Finding the Fourth Proportional to 131.98, 182.31 and 104.38

Step by Step Solution

1. Step 1: Write the proportion equation
   131.98 : 182.31 = 104.38 : x
2. Step 2: Convert to fraction form
   131.98/182.31 = 104.38/x
3. Step 3: Cross multiply
   131.98x = 182.31 × 104.38
4. Step 4: Simplify right side
   131.98x = 19,029.52
5. Step 5: Solve for x
   x = 19,029.52/131.98
6. Step 6: Final answer
   x = 144.18