Finding the Fourth Proportional to 59.27, 81.74 and 42.91

Step by Step Solution

1. Step 1: Write the proportion equation
   59.27 : 81.74 = 42.91 : x
2. Step 2: Convert to fraction form
   59.27/81.74 = 42.91/x
3. Step 3: Cross multiply
   59.27x = 81.74 × 42.91
4. Step 4: Simplify right side
   59.27x = 3,507.37
5. Step 5: Solve for x
   x = 3,507.37/59.27
6. Step 6: Final answer
   x = 59.18