Finding the Fourth Proportional to 52,215.72, 72,057.77 and 28,342.41

Step by Step Solution

1. Step 1: Write the proportion equation
   52,215.72 : 72,057.77 = 28,342.41 : x
2. Step 2: Convert to fraction form
   52,215.72/72,057.77 = 28,342.41/x
3. Step 3: Cross multiply
   52,215.72x = 72,057.77 × 28,342.41
4. Step 4: Simplify right side
   52,215.72x = 2,042,290,719.31
5. Step 5: Solve for x
   x = 2,042,290,719.31/52,215.72
6. Step 6: Final answer
   x = 39,112.56