Finding the Fourth Proportional to 42.54, 58.67 and 27.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42.54 : 58.67 = 27.98 : x
2. Step 2: Convert to fraction form
   42.54/58.67 = 27.98/x
3. Step 3: Cross multiply
   42.54x = 58.67 × 27.98
4. Step 4: Simplify right side
   42.54x = 1,641.59
5. Step 5: Solve for x
   x = 1,641.59/42.54
6. Step 6: Final answer
   x = 38.59