Finding the Fourth Proportional to 50,728.24, 76,063.56 and 42,459.76

Step by Step Solution

1. Step 1: Write the proportion equation
   50,728.24 : 76,063.56 = 42,459.76 : x
2. Step 2: Convert to fraction form
   50,728.24/76,063.56 = 42,459.76/x
3. Step 3: Cross multiply
   50,728.24x = 76,063.56 × 42,459.76
4. Step 4: Simplify right side
   50,728.24x = 3,229,640,502.35
5. Step 5: Solve for x
   x = 3,229,640,502.35/50,728.24
6. Step 6: Final answer
   x = 63,665.53