Finding the Fourth Proportional to 111.31, 166.98 and 30.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111.31 : 166.98 = 30.16 : x
2. Step 2: Convert to fraction form
   111.31/166.98 = 30.16/x
3. Step 3: Cross multiply
   111.31x = 166.98 × 30.16
4. Step 4: Simplify right side
   111.31x = 5,035.59
5. Step 5: Solve for x
   x = 5,035.59/111.31
6. Step 6: Final answer
   x = 45.24