Finding the Fourth Proportional to 52,271.69, 72,135.23 and 28,398.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52,271.69 : 72,135.23 = 28,398.56 : x
2. Step 2: Convert to fraction form
   52,271.69/72,135.23 = 28,398.56/x
3. Step 3: Cross multiply
   52,271.69x = 72,135.23 × 28,398.56
4. Step 4: Simplify right side
   52,271.69x = 2,048,536,154.60
5. Step 5: Solve for x
   x = 2,048,536,154.60/52,271.69
6. Step 6: Final answer
   x = 39,190.17