Finding the Fourth Proportional to 64,689.82, 89,276.50 and 36,011.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,689.82 : 89,276.50 = 36,011.76 : x
2. Step 2: Convert to fraction form
   64,689.82/89,276.50 = 36,011.76/x
3. Step 3: Cross multiply
   64,689.82x = 89,276.50 × 36,011.76
4. Step 4: Simplify right side
   64,689.82x = 3,215,003,891.64
5. Step 5: Solve for x
   x = 3,215,003,891.64/64,689.82
6. Step 6: Final answer
   x = 49,698.76