Finding the Fourth Proportional to 131.30, 181.39 and 111.83

Step by Step Solution

1. Step 1: Write the proportion equation
   131.30 : 181.39 = 111.83 : x
2. Step 2: Convert to fraction form
   131.30/181.39 = 111.83/x
3. Step 3: Cross multiply
   131.30x = 181.39 × 111.83
4. Step 4: Simplify right side
   131.30x = 20,284.84
5. Step 5: Solve for x
   x = 20,284.84/131.30
6. Step 6: Final answer
   x = 154.49