Finding the Fourth Proportional to 57,580.59, 86,395.98 and 20,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,580.59 : 86,395.98 = 20,167.50 : x
2. Step 2: Convert to fraction form
   57,580.59/86,395.98 = 20,167.50/x
3. Step 3: Cross multiply
   57,580.59x = 86,395.98 × 20,167.50
4. Step 4: Simplify right side
   57,580.59x = 1,742,390,444.25
5. Step 5: Solve for x
   x = 1,742,390,444.25/57,580.59
6. Step 6: Final answer
   x = 30,260.03