Finding the Fourth Proportional to 64,498.50, 89,005.35 and 35,819.64

Step by Step Solution

1. Step 1: Write the proportion equation
   64,498.50 : 89,005.35 = 35,819.64 : x
2. Step 2: Convert to fraction form
   64,498.50/89,005.35 = 35,819.64/x
3. Step 3: Cross multiply
   64,498.50x = 89,005.35 × 35,819.64
4. Step 4: Simplify right side
   64,498.50x = 3,188,139,595.07
5. Step 5: Solve for x
   x = 3,188,139,595.07/64,498.50
6. Step 6: Final answer
   x = 49,429.67