Finding the Fourth Proportional to 81,578.85, 122,404.72 and 36,609.27

Step by Step Solution

1. Step 1: Write the proportion equation
   81,578.85 : 122,404.72 = 36,609.27 : x
2. Step 2: Convert to fraction form
   81,578.85/122,404.72 = 36,609.27/x
3. Step 3: Cross multiply
   81,578.85x = 122,404.72 × 36,609.27
4. Step 4: Simplify right side
   81,578.85x = 4,481,146,961.86
5. Step 5: Solve for x
   x = 4,481,146,961.86/81,578.85
6. Step 6: Final answer
   x = 54,930.26