Finding the Fourth Proportional to 82.95, 124.45 and 42.38

Step by Step Solution

1. Step 1: Write the proportion equation
   82.95 : 124.45 = 42.38 : x
2. Step 2: Convert to fraction form
   82.95/124.45 = 42.38/x
3. Step 3: Cross multiply
   82.95x = 124.45 × 42.38
4. Step 4: Simplify right side
   82.95x = 5,274.19
5. Step 5: Solve for x
   x = 5,274.19/82.95
6. Step 6: Final answer
   x = 63.58