Finding the Fourth Proportional to 124.03, 185.98 and 42.86

Step by Step Solution

1. Step 1: Write the proportion equation
   124.03 : 185.98 = 42.86 : x
2. Step 2: Convert to fraction form
   124.03/185.98 = 42.86/x
3. Step 3: Cross multiply
   124.03x = 185.98 × 42.86
4. Step 4: Simplify right side
   124.03x = 7,971.10
5. Step 5: Solve for x
   x = 7,971.10/124.03
6. Step 6: Final answer
   x = 64.27