Finding the Fourth Proportional to 52,280.14, 72,144.98 and 28,406.30

Step by Step Solution

1. Step 1: Write the proportion equation
   52,280.14 : 72,144.98 = 28,406.30 : x
2. Step 2: Convert to fraction form
   52,280.14/72,144.98 = 28,406.30/x
3. Step 3: Cross multiply
   52,280.14x = 72,144.98 × 28,406.30
4. Step 4: Simplify right side
   52,280.14x = 2,049,371,945.37
5. Step 5: Solve for x
   x = 2,049,371,945.37/52,280.14
6. Step 6: Final answer
   x = 39,199.82