Finding the Fourth Proportional to 52.84, 72.84 and 42.43

Step by Step Solution

1. Step 1: Write the proportion equation
   52.84 : 72.84 = 42.43 : x
2. Step 2: Convert to fraction form
   52.84/72.84 = 42.43/x
3. Step 3: Cross multiply
   52.84x = 72.84 × 42.43
4. Step 4: Simplify right side
   52.84x = 3,090.60
5. Step 5: Solve for x
   x = 3,090.60/52.84
6. Step 6: Final answer
   x = 58.49