Finding the Fourth Proportional to 57,869.37, 86,757.33 and 53,198.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,869.37 : 86,757.33 = 53,198.50 : x
2. Step 2: Convert to fraction form
   57,869.37/86,757.33 = 53,198.50/x
3. Step 3: Cross multiply
   57,869.37x = 86,757.33 × 53,198.50
4. Step 4: Simplify right side
   57,869.37x = 4,615,359,820.01
5. Step 5: Solve for x
   x = 4,615,359,820.01/57,869.37
6. Step 6: Final answer
   x = 79,754.80