Finding the Fourth Proportional to 57,522.54, 86,308.94 and 20,109.47

Step by Step Solution

1. Step 1: Write the proportion equation
   57,522.54 : 86,308.94 = 20,109.47 : x
2. Step 2: Convert to fraction form
   57,522.54/86,308.94 = 20,109.47/x
3. Step 3: Cross multiply
   57,522.54x = 86,308.94 × 20,109.47
4. Step 4: Simplify right side
   57,522.54x = 1,735,627,305.71
5. Step 5: Solve for x
   x = 1,735,627,305.71/57,522.54
6. Step 6: Final answer
   x = 30,172.99