Finding the Fourth Proportional to 326.89, 490.01 and 131.83

Step by Step Solution

1. Step 1: Write the proportion equation
   326.89 : 490.01 = 131.83 : x
2. Step 2: Convert to fraction form
   326.89/490.01 = 131.83/x
3. Step 3: Cross multiply
   326.89x = 490.01 × 131.83
4. Step 4: Simplify right side
   326.89x = 64,598.02
5. Step 5: Solve for x
   x = 64,598.02/326.89
6. Step 6: Final answer
   x = 197.61