Finding the Fourth Proportional to 59.99, 89.91 and 31.05

Step by Step Solution

1. Step 1: Write the proportion equation
   59.99 : 89.91 = 31.05 : x
2. Step 2: Convert to fraction form
   59.99/89.91 = 31.05/x
3. Step 3: Cross multiply
   59.99x = 89.91 × 31.05
4. Step 4: Simplify right side
   59.99x = 2,791.93
5. Step 5: Solve for x
   x = 2,791.93/59.99
6. Step 6: Final answer
   x = 46.54