Finding the Fourth Proportional to 52,494.89, 72,443.57 and 28,621.35

Step by Step Solution

1. Step 1: Write the proportion equation
   52,494.89 : 72,443.57 = 28,621.35 : x
2. Step 2: Convert to fraction form
   52,494.89/72,443.57 = 28,621.35/x
3. Step 3: Cross multiply
   52,494.89x = 72,443.57 × 28,621.35
4. Step 4: Simplify right side
   52,494.89x = 2,073,432,629.11
5. Step 5: Solve for x
   x = 2,073,432,629.11/52,494.89
6. Step 6: Final answer
   x = 39,497.80