Finding the Fourth Proportional to 131.83, 181.58 and 111.22

Step by Step Solution

1. Step 1: Write the proportion equation
   131.83 : 181.58 = 111.22 : x
2. Step 2: Convert to fraction form
   131.83/181.58 = 111.22/x
3. Step 3: Cross multiply
   131.83x = 181.58 × 111.22
4. Step 4: Simplify right side
   131.83x = 20,194.32
5. Step 5: Solve for x
   x = 20,194.32/131.83
6. Step 6: Final answer
   x = 153.19