Finding the Fourth Proportional to 81,714, 122,567.61 and 28,418.04

Step by Step Solution

1. Step 1: Write the proportion equation
   81,714 : 122,567.61 = 28,418.04 : x
2. Step 2: Convert to fraction form
   81,714/122,567.61 = 28,418.04/x
3. Step 3: Cross multiply
   81,714x = 122,567.61 × 28,418.04
4. Step 4: Simplify right side
   81,714x = 3,483,131,243.68
5. Step 5: Solve for x
   x = 3,483,131,243.68/81,714
6. Step 6: Final answer
   x = 42,625.88