Finding the Fourth Proportional to 30,081.78, 41,513.35 and 16,469.60

Step by Step Solution

1. Step 1: Write the proportion equation
   30,081.78 : 41,513.35 = 16,469.60 : x
2. Step 2: Convert to fraction form
   30,081.78/41,513.35 = 16,469.60/x
3. Step 3: Cross multiply
   30,081.78x = 41,513.35 × 16,469.60
4. Step 4: Simplify right side
   30,081.78x = 683,708,020.42
5. Step 5: Solve for x
   x = 683,708,020.42/30,081.78
6. Step 6: Final answer
   x = 22,728.31