Finding the Fourth Proportional to 64,778.70, 89,399.25 and 36,100.29

Step by Step Solution

1. Step 1: Write the proportion equation
   64,778.70 : 89,399.25 = 36,100.29 : x
2. Step 2: Convert to fraction form
   64,778.70/89,399.25 = 36,100.29/x
3. Step 3: Cross multiply
   64,778.70x = 89,399.25 × 36,100.29
4. Step 4: Simplify right side
   64,778.70x = 3,227,338,850.78
5. Step 5: Solve for x
   x = 3,227,338,850.78/64,778.70
6. Step 6: Final answer
   x = 49,820.99