Finding the Fourth Proportional to 57,773.89, 86,665.74 and 16,220.89

Step by Step Solution

1. Step 1: Write the proportion equation
   57,773.89 : 86,665.74 = 16,220.89 : x
2. Step 2: Convert to fraction form
   57,773.89/86,665.74 = 16,220.89/x
3. Step 3: Cross multiply
   57,773.89x = 86,665.74 × 16,220.89
4. Step 4: Simplify right side
   57,773.89x = 1,405,795,435.31
5. Step 5: Solve for x
   x = 1,405,795,435.31/57,773.89
6. Step 6: Final answer
   x = 24,332.71