Finding the Fourth Proportional to 64,786.83, 89,404.47 and 36,109.11

Step by Step Solution

1. Step 1: Write the proportion equation
   64,786.83 : 89,404.47 = 36,109.11 : x
2. Step 2: Convert to fraction form
   64,786.83/89,404.47 = 36,109.11/x
3. Step 3: Cross multiply
   64,786.83x = 89,404.47 × 36,109.11
4. Step 4: Simplify right side
   64,786.83x = 3,228,315,744.82
5. Step 5: Solve for x
   x = 3,228,315,744.82/64,786.83
6. Step 6: Final answer
   x = 49,829.82