Finding the Fourth Proportional to 78,747, 108,670.86 and 50,469.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,747 : 108,670.86 = 50,469.09 : x
2. Step 2: Convert to fraction form
   78,747/108,670.86 = 50,469.09/x
3. Step 3: Cross multiply
   78,747x = 108,670.86 × 50,469.09
4. Step 4: Simplify right side
   78,747x = 5,484,519,413.72
5. Step 5: Solve for x
   x = 5,484,519,413.72/78,747
6. Step 6: Final answer
   x = 69,647.34