Finding the Fourth Proportional to 89,353.38, 123,309.79 and 48,519.20

Step by Step Solution

1. Step 1: Write the proportion equation
   89,353.38 : 123,309.79 = 48,519.20 : x
2. Step 2: Convert to fraction form
   89,353.38/123,309.79 = 48,519.20/x
3. Step 3: Cross multiply
   89,353.38x = 123,309.79 × 48,519.20
4. Step 4: Simplify right side
   89,353.38x = 5,982,892,822.86
5. Step 5: Solve for x
   x = 5,982,892,822.86/89,353.38
6. Step 6: Final answer
   x = 66,957.66