Finding the Fourth Proportional to 42.87, 63.83 and 42.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42.87 : 63.83 = 42.33 : x
2. Step 2: Convert to fraction form
   42.87/63.83 = 42.33/x
3. Step 3: Cross multiply
   42.87x = 63.83 × 42.33
4. Step 4: Simplify right side
   42.87x = 2,701.71
5. Step 5: Solve for x
   x = 2,701.71/42.87
6. Step 6: Final answer
   x = 63.02