Finding the Fourth Proportional to 57,524.54, 86,311.94 and 20,111.47

Step by Step Solution

1. Step 1: Write the proportion equation
   57,524.54 : 86,311.94 = 20,111.47 : x
2. Step 2: Convert to fraction form
   57,524.54/86,311.94 = 20,111.47/x
3. Step 3: Cross multiply
   57,524.54x = 86,311.94 × 20,111.47
4. Step 4: Simplify right side
   57,524.54x = 1,735,859,991.95
5. Step 5: Solve for x
   x = 1,735,859,991.95/57,524.54
6. Step 6: Final answer
   x = 30,175.99