Finding the Fourth Proportional to 57,510.55, 86,238.48 and 20,066.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57,510.55 : 86,238.48 = 20,066.09 : x
2. Step 2: Convert to fraction form
   57,510.55/86,238.48 = 20,066.09/x
3. Step 3: Cross multiply
   57,510.55x = 86,238.48 × 20,066.09
4. Step 4: Simplify right side
   57,510.55x = 1,730,469,101.14
5. Step 5: Solve for x
   x = 1,730,469,101.14/57,510.55
6. Step 6: Final answer
   x = 30,089.59