Finding the Fourth Proportional to 64,785.69, 89,400.60 and 36,103.59

Step by Step Solution

1. Step 1: Write the proportion equation
   64,785.69 : 89,400.60 = 36,103.59 : x
2. Step 2: Convert to fraction form
   64,785.69/89,400.60 = 36,103.59/x
3. Step 3: Cross multiply
   64,785.69x = 89,400.60 × 36,103.59
4. Step 4: Simplify right side
   64,785.69x = 3,227,682,608.15
5. Step 5: Solve for x
   x = 3,227,682,608.15/64,785.69
6. Step 6: Final answer
   x = 49,820.92