Finding the Fourth Proportional to 152.72, 227.86 and 131.12

Step by Step Solution

1. Step 1: Write the proportion equation
   152.72 : 227.86 = 131.12 : x
2. Step 2: Convert to fraction form
   152.72/227.86 = 131.12/x
3. Step 3: Cross multiply
   152.72x = 227.86 × 131.12
4. Step 4: Simplify right side
   152.72x = 29,877.00
5. Step 5: Solve for x
   x = 29,877.00/152.72
6. Step 6: Final answer
   x = 195.63