Finding the Fourth Proportional to 52,784.14, 72,839.71 and 28,910.30

Step by Step Solution

1. Step 1: Write the proportion equation
   52,784.14 : 72,839.71 = 28,910.30 : x
2. Step 2: Convert to fraction form
   52,784.14/72,839.71 = 28,910.30/x
3. Step 3: Cross multiply
   52,784.14x = 72,839.71 × 28,910.30
4. Step 4: Simplify right side
   52,784.14x = 2,105,818,086.25
5. Step 5: Solve for x
   x = 2,105,818,086.25/52,784.14
6. Step 6: Final answer
   x = 39,894.90