Finding the Fourth Proportional to 131.72, 181.51 and 94.27

Step by Step Solution

1. Step 1: Write the proportion equation
   131.72 : 181.51 = 94.27 : x
2. Step 2: Convert to fraction form
   131.72/181.51 = 94.27/x
3. Step 3: Cross multiply
   131.72x = 181.51 × 94.27
4. Step 4: Simplify right side
   131.72x = 17,109.57
5. Step 5: Solve for x
   x = 17,109.57/131.72
6. Step 6: Final answer
   x = 129.90