Finding the Fourth Proportional to 64,826.45, 89,456.77 and 36,145.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,826.45 : 89,456.77 = 36,145.16 : x
2. Step 2: Convert to fraction form
   64,826.45/89,456.77 = 36,145.16/x
3. Step 3: Cross multiply
   64,826.45x = 89,456.77 × 36,145.16
4. Step 4: Simplify right side
   64,826.45x = 3,233,429,264.73
5. Step 5: Solve for x
   x = 3,233,429,264.73/64,826.45
6. Step 6: Final answer
   x = 49,878.24