Finding the Fourth Proportional to 64,789.15, 89,378.46 and 37,915.03

Step by Step Solution

1. Step 1: Write the proportion equation
   64,789.15 : 89,378.46 = 37,915.03 : x
2. Step 2: Convert to fraction form
   64,789.15/89,378.46 = 37,915.03/x
3. Step 3: Cross multiply
   64,789.15x = 89,378.46 × 37,915.03
4. Step 4: Simplify right side
   64,789.15x = 3,388,786,992.25
5. Step 5: Solve for x
   x = 3,388,786,992.25/64,789.15
6. Step 6: Final answer
   x = 52,304.85