Finding the Fourth Proportional to 52,291, 72,162.05 and 28,417.68

Step by Step Solution

1. Step 1: Write the proportion equation
   52,291 : 72,162.05 = 28,417.68 : x
2. Step 2: Convert to fraction form
   52,291/72,162.05 = 28,417.68/x
3. Step 3: Cross multiply
   52,291x = 72,162.05 × 28,417.68
4. Step 4: Simplify right side
   52,291x = 2,050,678,045.04
5. Step 5: Solve for x
   x = 2,050,678,045.04/52,291
6. Step 6: Final answer
   x = 39,216.65