Finding the Fourth Proportional to 52,682.16, 72,697.59 and 28,803.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,682.16 : 72,697.59 = 28,803.78 : x
2. Step 2: Convert to fraction form
   52,682.16/72,697.59 = 28,803.78/x
3. Step 3: Cross multiply
   52,682.16x = 72,697.59 × 28,803.78
4. Step 4: Simplify right side
   52,682.16x = 2,093,965,388.89
5. Step 5: Solve for x
   x = 2,093,965,388.89/52,682.16
6. Step 6: Final answer
   x = 39,747.14