Finding the Fourth Proportional to 111.75, 167.60 and 30.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111.75 : 167.60 = 30.59 : x
2. Step 2: Convert to fraction form
   111.75/167.60 = 30.59/x
3. Step 3: Cross multiply
   111.75x = 167.60 × 30.59
4. Step 4: Simplify right side
   111.75x = 5,125.89
5. Step 5: Solve for x
   x = 5,125.89/111.75
6. Step 6: Final answer
   x = 45.87