Finding the Fourth Proportional to 46.42, 69.96 and 42.46

Step by Step Solution

1. Step 1: Write the proportion equation
   46.42 : 69.96 = 42.46 : x
2. Step 2: Convert to fraction form
   46.42/69.96 = 42.46/x
3. Step 3: Cross multiply
   46.42x = 69.96 × 42.46
4. Step 4: Simplify right side
   46.42x = 2,970.50
5. Step 5: Solve for x
   x = 2,970.50/46.42
6. Step 6: Final answer
   x = 63.99