Finding the Fourth Proportional to 89,406.49, 123,380.49 and 48,570.30

Step by Step Solution

1. Step 1: Write the proportion equation
   89,406.49 : 123,380.49 = 48,570.30 : x
2. Step 2: Convert to fraction form
   89,406.49/123,380.49 = 48,570.30/x
3. Step 3: Cross multiply
   89,406.49x = 123,380.49 × 48,570.30
4. Step 4: Simplify right side
   89,406.49x = 5,992,627,413.45
5. Step 5: Solve for x
   x = 5,992,627,413.45/89,406.49
6. Step 6: Final answer
   x = 67,026.76