Finding the Fourth Proportional to 101,028.98, 139,413.55 and 55,707.25

Step by Step Solution

1. Step 1: Write the proportion equation
   101,028.98 : 139,413.55 = 55,707.25 : x
2. Step 2: Convert to fraction form
   101,028.98/139,413.55 = 55,707.25/x
3. Step 3: Cross multiply
   101,028.98x = 139,413.55 × 55,707.25
4. Step 4: Simplify right side
   101,028.98x = 7,766,345,483.24
5. Step 5: Solve for x
   x = 7,766,345,483.24/101,028.98
6. Step 6: Final answer
   x = 76,872.45