Finding the Fourth Proportional to 81,745.03, 122,550.72 and 42,313.42

Step by Step Solution

1. Step 1: Write the proportion equation
   81,745.03 : 122,550.72 = 42,313.42 : x
2. Step 2: Convert to fraction form
   81,745.03/122,550.72 = 42,313.42/x
3. Step 3: Cross multiply
   81,745.03x = 122,550.72 × 42,313.42
4. Step 4: Simplify right side
   81,745.03x = 5,185,540,086.66
5. Step 5: Solve for x
   x = 5,185,540,086.66/81,745.03
6. Step 6: Final answer
   x = 63,435.54