Finding the Fourth Proportional to 81,640.89, 122,499 and 37,281.24

Step by Step Solution

1. Step 1: Write the proportion equation
   81,640.89 : 122,499 = 37,281.24 : x
2. Step 2: Convert to fraction form
   81,640.89/122,499 = 37,281.24/x
3. Step 3: Cross multiply
   81,640.89x = 122,499 × 37,281.24
4. Step 4: Simplify right side
   81,640.89x = 4,566,914,618.76
5. Step 5: Solve for x
   x = 4,566,914,618.76/81,640.89
6. Step 6: Final answer
   x = 55,939.06