Finding the Fourth Proportional to 59.10, 88.53 and 42.84

Step by Step Solution

1. Step 1: Write the proportion equation
   59.10 : 88.53 = 42.84 : x
2. Step 2: Convert to fraction form
   59.10/88.53 = 42.84/x
3. Step 3: Cross multiply
   59.10x = 88.53 × 42.84
4. Step 4: Simplify right side
   59.10x = 3,792.63
5. Step 5: Solve for x
   x = 3,792.63/59.10
6. Step 6: Final answer
   x = 64.17