Finding the Fourth Proportional to 57,104.67, 85,665.15 and 17,664.78

Step by Step Solution

1. Step 1: Write the proportion equation
   57,104.67 : 85,665.15 = 17,664.78 : x
2. Step 2: Convert to fraction form
   57,104.67/85,665.15 = 17,664.78/x
3. Step 3: Cross multiply
   57,104.67x = 85,665.15 × 17,664.78
4. Step 4: Simplify right side
   57,104.67x = 1,513,256,028.42
5. Step 5: Solve for x
   x = 1,513,256,028.42/57,104.67
6. Step 6: Final answer
   x = 26,499.69