Finding the Fourth Proportional to 52,328.52, 72,214.72 and 28,456.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,328.52 : 72,214.72 = 28,456.60 : x
2. Step 2: Convert to fraction form
   52,328.52/72,214.72 = 28,456.60/x
3. Step 3: Cross multiply
   52,328.52x = 72,214.72 × 28,456.60
4. Step 4: Simplify right side
   52,328.52x = 2,054,985,401.15
5. Step 5: Solve for x
   x = 2,054,985,401.15/52,328.52
6. Step 6: Final answer
   x = 39,270.85