Finding the Fourth Proportional to 42,876.72, 64,413.90 and 41,105.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,876.72 : 64,413.90 = 41,105.28 : x
2. Step 2: Convert to fraction form
   42,876.72/64,413.90 = 41,105.28/x
3. Step 3: Cross multiply
   42,876.72x = 64,413.90 × 41,105.28
4. Step 4: Simplify right side
   42,876.72x = 2,647,751,395.39
5. Step 5: Solve for x
   x = 2,647,751,395.39/42,876.72
6. Step 6: Final answer
   x = 61,752.66