Finding the Fourth Proportional to 42.84, 64.23 and 35.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42.84 : 64.23 = 35.34 : x
2. Step 2: Convert to fraction form
   42.84/64.23 = 35.34/x
3. Step 3: Cross multiply
   42.84x = 64.23 × 35.34
4. Step 4: Simplify right side
   42.84x = 2,269.89
5. Step 5: Solve for x
   x = 2,269.89/42.84
6. Step 6: Final answer
   x = 52.99