Finding the Fourth Proportional to 65.41, 90.18 and 42.06

Step by Step Solution

1. Step 1: Write the proportion equation
   65.41 : 90.18 = 42.06 : x
2. Step 2: Convert to fraction form
   65.41/90.18 = 42.06/x
3. Step 3: Cross multiply
   65.41x = 90.18 × 42.06
4. Step 4: Simplify right side
   65.41x = 3,792.52
5. Step 5: Solve for x
   x = 3,792.52/65.41
6. Step 6: Final answer
   x = 57.98