Finding the Fourth Proportional to 64,499.36, 89,002.28 and 36,208.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,499.36 : 89,002.28 = 36,208.16 : x
2. Step 2: Convert to fraction form
   64,499.36/89,002.28 = 36,208.16/x
3. Step 3: Cross multiply
   64,499.36x = 89,002.28 × 36,208.16
4. Step 4: Simplify right side
   64,499.36x = 3,222,608,794.60
5. Step 5: Solve for x
   x = 3,222,608,794.60/64,499.36
6. Step 6: Final answer
   x = 49,963.42