Finding the Fourth Proportional to 49.50, 68.18 and 42.59

Step by Step Solution

1. Step 1: Write the proportion equation
   49.50 : 68.18 = 42.59 : x
2. Step 2: Convert to fraction form
   49.50/68.18 = 42.59/x
3. Step 3: Cross multiply
   49.50x = 68.18 × 42.59
4. Step 4: Simplify right side
   49.50x = 2,903.23
5. Step 5: Solve for x
   x = 2,903.23/49.50
6. Step 6: Final answer
   x = 58.65