Finding the Fourth Proportional to 50,871.32, 70,198.62 and 28,511

Step by Step Solution

1. Step 1: Write the proportion equation
   50,871.32 : 70,198.62 = 28,511 : x
2. Step 2: Convert to fraction form
   50,871.32/70,198.62 = 28,511/x
3. Step 3: Cross multiply
   50,871.32x = 70,198.62 × 28,511
4. Step 4: Simplify right side
   50,871.32x = 2,001,432,854.82
5. Step 5: Solve for x
   x = 2,001,432,854.82/50,871.32
6. Step 6: Final answer
   x = 39,343.05