Finding the Fourth Proportional to 124.30, 186.39 and 42.01

Step by Step Solution

1. Step 1: Write the proportion equation
   124.30 : 186.39 = 42.01 : x
2. Step 2: Convert to fraction form
   124.30/186.39 = 42.01/x
3. Step 3: Cross multiply
   124.30x = 186.39 × 42.01
4. Step 4: Simplify right side
   124.30x = 7,829.10
5. Step 5: Solve for x
   x = 7,829.10/124.30
6. Step 6: Final answer
   x = 62.99