Finding the Fourth Proportional to 131.52, 181.14 and 113.10

Step by Step Solution

1. Step 1: Write the proportion equation
   131.52 : 181.14 = 113.10 : x
2. Step 2: Convert to fraction form
   131.52/181.14 = 113.10/x
3. Step 3: Cross multiply
   131.52x = 181.14 × 113.10
4. Step 4: Simplify right side
   131.52x = 20,485.83
5. Step 5: Solve for x
   x = 20,485.83/131.52
6. Step 6: Final answer
   x = 155.76