Finding the Fourth Proportional to 59.10, 81.63 and 42.48

Step by Step Solution

1. Step 1: Write the proportion equation
   59.10 : 81.63 = 42.48 : x
2. Step 2: Convert to fraction form
   59.10/81.63 = 42.48/x
3. Step 3: Cross multiply
   59.10x = 81.63 × 42.48
4. Step 4: Simplify right side
   59.10x = 3,467.64
5. Step 5: Solve for x
   x = 3,467.64/59.10
6. Step 6: Final answer
   x = 58.67