Finding the Fourth Proportional to 52,216.10, 72,057.98 and 28,342.57

Step by Step Solution

1. Step 1: Write the proportion equation
   52,216.10 : 72,057.98 = 28,342.57 : x
2. Step 2: Convert to fraction form
   52,216.10/72,057.98 = 28,342.57/x
3. Step 3: Cross multiply
   52,216.10x = 72,057.98 × 28,342.57
4. Step 4: Simplify right side
   52,216.10x = 2,042,307,840.21
5. Step 5: Solve for x
   x = 2,042,307,840.21/52,216.10
6. Step 6: Final answer
   x = 39,112.61