Finding the Fourth Proportional to 64,786.40, 89,408.28 and 37,937.55

Step by Step Solution

1. Step 1: Write the proportion equation
   64,786.40 : 89,408.28 = 37,937.55 : x
2. Step 2: Convert to fraction form
   64,786.40/89,408.28 = 37,937.55/x
3. Step 3: Cross multiply
   64,786.40x = 89,408.28 × 37,937.55
4. Step 4: Simplify right side
   64,786.40x = 3,391,931,092.91
5. Step 5: Solve for x
   x = 3,391,931,092.91/64,786.40
6. Step 6: Final answer
   x = 52,355.61