Finding the Fourth Proportional to 50,784.77, 70,082.79 and 28,428.77

Step by Step Solution

1. Step 1: Write the proportion equation
   50,784.77 : 70,082.79 = 28,428.77 : x
2. Step 2: Convert to fraction form
   50,784.77/70,082.79 = 28,428.77/x
3. Step 3: Cross multiply
   50,784.77x = 70,082.79 × 28,428.77
4. Step 4: Simplify right side
   50,784.77x = 1,992,367,167.45
5. Step 5: Solve for x
   x = 1,992,367,167.45/50,784.77
6. Step 6: Final answer
   x = 39,231.59