Finding the Fourth Proportional to 52,215.84, 72,057.92 and 28,342.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,215.84 : 72,057.92 = 28,342.50 : x
2. Step 2: Convert to fraction form
   52,215.84/72,057.92 = 28,342.50/x
3. Step 3: Cross multiply
   52,215.84x = 72,057.92 × 28,342.50
4. Step 4: Simplify right side
   52,215.84x = 2,042,301,597.60
5. Step 5: Solve for x
   x = 2,042,301,597.60/52,215.84
6. Step 6: Final answer
   x = 39,112.68