Finding the Fourth Proportional to 43.30, 64.50 and 42.04

Step by Step Solution

1. Step 1: Write the proportion equation
   43.30 : 64.50 = 42.04 : x
2. Step 2: Convert to fraction form
   43.30/64.50 = 42.04/x
3. Step 3: Cross multiply
   43.30x = 64.50 × 42.04
4. Step 4: Simplify right side
   43.30x = 2,711.58
5. Step 5: Solve for x
   x = 2,711.58/43.30
6. Step 6: Final answer
   x = 62.62