Finding the Fourth Proportional to 46,819.50, 64,644.76 and 28,939.02

Step by Step Solution

1. Step 1: Write the proportion equation
   46,819.50 : 64,644.76 = 28,939.02 : x
2. Step 2: Convert to fraction form
   46,819.50/64,644.76 = 28,939.02/x
3. Step 3: Cross multiply
   46,819.50x = 64,644.76 × 28,939.02
4. Step 4: Simplify right side
   46,819.50x = 1,870,756,002.54
5. Step 5: Solve for x
   x = 1,870,756,002.54/46,819.50
6. Step 6: Final answer
   x = 39,956.77