Finding the Fourth Proportional to 65,284.53, 89,505.92 and 64,103.55

Step by Step Solution

1. Step 1: Write the proportion equation
   65,284.53 : 89,505.92 = 64,103.55 : x
2. Step 2: Convert to fraction form
   65,284.53/89,505.92 = 64,103.55/x
3. Step 3: Cross multiply
   65,284.53x = 89,505.92 × 64,103.55
4. Step 4: Simplify right side
   65,284.53x = 5,737,647,042.63
5. Step 5: Solve for x
   x = 5,737,647,042.63/65,284.53
6. Step 6: Final answer
   x = 87,886.78