Finding the Fourth Proportional to 141.83, 212.61 and 111.29

Step by Step Solution

1. Step 1: Write the proportion equation
   141.83 : 212.61 = 111.29 : x
2. Step 2: Convert to fraction form
   141.83/212.61 = 111.29/x
3. Step 3: Cross multiply
   141.83x = 212.61 × 111.29
4. Step 4: Simplify right side
   141.83x = 23,660.30
5. Step 5: Solve for x
   x = 23,660.30/141.83
6. Step 6: Final answer
   x = 166.83