Finding the Fourth Proportional to 76.47, 114.71 and 42.26

Step by Step Solution

1. Step 1: Write the proportion equation
   76.47 : 114.71 = 42.26 : x
2. Step 2: Convert to fraction form
   76.47/114.71 = 42.26/x
3. Step 3: Cross multiply
   76.47x = 114.71 × 42.26
4. Step 4: Simplify right side
   76.47x = 4,846.86
5. Step 5: Solve for x
   x = 4,846.86/76.47
6. Step 6: Final answer
   x = 63.38