Finding the Fourth Proportional to 50,043.89, 69,085.56 and 28,819.06

Step by Step Solution

1. Step 1: Write the proportion equation
   50,043.89 : 69,085.56 = 28,819.06 : x
2. Step 2: Convert to fraction form
   50,043.89/69,085.56 = 28,819.06/x
3. Step 3: Cross multiply
   50,043.89x = 69,085.56 × 28,819.06
4. Step 4: Simplify right side
   50,043.89x = 1,990,980,834.13
5. Step 5: Solve for x
   x = 1,990,980,834.13/50,043.89
6. Step 6: Final answer
   x = 39,784.69