Finding the Fourth Proportional to 57,665.31, 86,510.51 and 17,684.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,665.31 : 86,510.51 = 17,684.31 : x
2. Step 2: Convert to fraction form
   57,665.31/86,510.51 = 17,684.31/x
3. Step 3: Cross multiply
   57,665.31x = 86,510.51 × 17,684.31
4. Step 4: Simplify right side
   57,665.31x = 1,529,878,677.10
5. Step 5: Solve for x
   x = 1,529,878,677.10/57,665.31
6. Step 6: Final answer
   x = 26,530.31