Finding the Fourth Proportional to 52,780.52, 72,837.94 and 28,906.76

Step by Step Solution

1. Step 1: Write the proportion equation
   52,780.52 : 72,837.94 = 28,906.76 : x
2. Step 2: Convert to fraction form
   52,780.52/72,837.94 = 28,906.76/x
3. Step 3: Cross multiply
   52,780.52x = 72,837.94 × 28,906.76
4. Step 4: Simplify right side
   52,780.52x = 2,105,508,850.47
5. Step 5: Solve for x
   x = 2,105,508,850.47/52,780.52
6. Step 6: Final answer
   x = 39,891.78