Finding the Fourth Proportional to 52,291.61, 72,162.98 and 28,418.29

Step by Step Solution

1. Step 1: Write the proportion equation
   52,291.61 : 72,162.98 = 28,418.29 : x
2. Step 2: Convert to fraction form
   52,291.61/72,162.98 = 28,418.29/x
3. Step 3: Cross multiply
   52,291.61x = 72,162.98 × 28,418.29
4. Step 4: Simplify right side
   52,291.61x = 2,050,748,436.83
5. Step 5: Solve for x
   x = 2,050,748,436.83/52,291.61
6. Step 6: Final answer
   x = 39,217.54