Finding the Fourth Proportional to 52,451.89, 72,384.44 and 28,578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52,451.89 : 72,384.44 = 28,578.56 : x
2. Step 2: Convert to fraction form
   52,451.89/72,384.44 = 28,578.56/x
3. Step 3: Cross multiply
   52,451.89x = 72,384.44 × 28,578.56
4. Step 4: Simplify right side
   52,451.89x = 2,068,643,061.61
5. Step 5: Solve for x
   x = 2,068,643,061.61/52,451.89
6. Step 6: Final answer
   x = 39,438.87