Finding the Fourth Proportional to 64,698.08, 89,285.10 and 36,404.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,698.08 : 89,285.10 = 36,404.78 : x
2. Step 2: Convert to fraction form
   64,698.08/89,285.10 = 36,404.78/x
3. Step 3: Cross multiply
   64,698.08x = 89,285.10 × 36,404.78
4. Step 4: Simplify right side
   64,698.08x = 3,250,404,422.78
5. Step 5: Solve for x
   x = 3,250,404,422.78/64,698.08
6. Step 6: Final answer
   x = 50,239.58