Finding the Fourth Proportional to 72.86, 109.27 and 42.44

Step by Step Solution

1. Step 1: Write the proportion equation
   72.86 : 109.27 = 42.44 : x
2. Step 2: Convert to fraction form
   72.86/109.27 = 42.44/x
3. Step 3: Cross multiply
   72.86x = 109.27 × 42.44
4. Step 4: Simplify right side
   72.86x = 4,637.59
5. Step 5: Solve for x
   x = 4,637.59/72.86
6. Step 6: Final answer
   x = 63.65