Finding the Fourth Proportional to 57,665.22, 86,510.53 and 17,689.71

Step by Step Solution

1. Step 1: Write the proportion equation
   57,665.22 : 86,510.53 = 17,689.71 : x
2. Step 2: Convert to fraction form
   57,665.22/86,510.53 = 17,689.71/x
3. Step 3: Cross multiply
   57,665.22x = 86,510.53 × 17,689.71
4. Step 4: Simplify right side
   57,665.22x = 1,530,346,143.42
5. Step 5: Solve for x
   x = 1,530,346,143.42/57,665.22
6. Step 6: Final answer
   x = 26,538.46