Finding the Fourth Proportional to 45.59, 68.00 and 42.84

Step by Step Solution

1. Step 1: Write the proportion equation
   45.59 : 68.00 = 42.84 : x
2. Step 2: Convert to fraction form
   45.59/68.00 = 42.84/x
3. Step 3: Cross multiply
   45.59x = 68.00 × 42.84
4. Step 4: Simplify right side
   45.59x = 2,912.91
5. Step 5: Solve for x
   x = 2,912.91/45.59
6. Step 6: Final answer
   x = 63.90