Finding the Fourth Proportional to 81.83, 122.72 and 41.27

Step by Step Solution

1. Step 1: Write the proportion equation
   81.83 : 122.72 = 41.27 : x
2. Step 2: Convert to fraction form
   81.83/122.72 = 41.27/x
3. Step 3: Cross multiply
   81.83x = 122.72 × 41.27
4. Step 4: Simplify right side
   81.83x = 5,063.83
5. Step 5: Solve for x
   x = 5,063.83/81.83
6. Step 6: Final answer
   x = 61.89