Finding the Fourth Proportional to 52,421.52, 72,343 and 28,549.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,421.52 : 72,343 = 28,549.50 : x
2. Step 2: Convert to fraction form
   52,421.52/72,343 = 28,549.50/x
3. Step 3: Cross multiply
   52,421.52x = 72,343 × 28,549.50
4. Step 4: Simplify right side
   52,421.52x = 2,065,356,478.50
5. Step 5: Solve for x
   x = 2,065,356,478.50/52,421.52
6. Step 6: Final answer
   x = 39,399.02