Finding the Fourth Proportional to 42.54, 63.50 and 40.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42.54 : 63.50 = 40.98 : x
2. Step 2: Convert to fraction form
   42.54/63.50 = 40.98/x
3. Step 3: Cross multiply
   42.54x = 63.50 × 40.98
4. Step 4: Simplify right side
   42.54x = 2,602.03
5. Step 5: Solve for x
   x = 2,602.03/42.54
6. Step 6: Final answer
   x = 61.17