Finding the Fourth Proportional to 72,469.78, 108,692.16 and 19,162.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,469.78 : 108,692.16 = 19,162.24 : x
2. Step 2: Convert to fraction form
   72,469.78/108,692.16 = 19,162.24/x
3. Step 3: Cross multiply
   72,469.78x = 108,692.16 × 19,162.24
4. Step 4: Simplify right side
   72,469.78x = 2,082,785,256.04
5. Step 5: Solve for x
   x = 2,082,785,256.04/72,469.78
6. Step 6: Final answer
   x = 28,740.05