Finding the Fourth Proportional to 64,884.21, 89,540.28 and 38,021.37

Step by Step Solution

1. Step 1: Write the proportion equation
   64,884.21 : 89,540.28 = 38,021.37 : x
2. Step 2: Convert to fraction form
   64,884.21/89,540.28 = 38,021.37/x
3. Step 3: Cross multiply
   64,884.21x = 89,540.28 × 38,021.37
4. Step 4: Simplify right side
   64,884.21x = 3,404,444,115.78
5. Step 5: Solve for x
   x = 3,404,444,115.78/64,884.21
6. Step 6: Final answer
   x = 52,469.53