Finding the Fourth Proportional to 65,284.21, 89,505.49 and 64,103.23

Step by Step Solution

1. Step 1: Write the proportion equation
   65,284.21 : 89,505.49 = 64,103.23 : x
2. Step 2: Convert to fraction form
   65,284.21/89,505.49 = 64,103.23/x
3. Step 3: Cross multiply
   65,284.21x = 89,505.49 × 64,103.23
4. Step 4: Simplify right side
   65,284.21x = 5,737,591,395.75
5. Step 5: Solve for x
   x = 5,737,591,395.75/65,284.21
6. Step 6: Final answer
   x = 87,886.35