Finding the Fourth Proportional to 57,664.50, 86,502.42 and 16,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,664.50 : 86,502.42 = 16,111.50 : x
2. Step 2: Convert to fraction form
   57,664.50/86,502.42 = 16,111.50/x
3. Step 3: Cross multiply
   57,664.50x = 86,502.42 × 16,111.50
4. Step 4: Simplify right side
   57,664.50x = 1,393,683,739.83
5. Step 5: Solve for x
   x = 1,393,683,739.83/57,664.50
6. Step 6: Final answer
   x = 24,168.83