Finding the Fourth Proportional to 80,499.87, 111,090.21 and 50,302.73

Step by Step Solution

1. Step 1: Write the proportion equation
   80,499.87 : 111,090.21 = 50,302.73 : x
2. Step 2: Convert to fraction form
   80,499.87/111,090.21 = 50,302.73/x
3. Step 3: Cross multiply
   80,499.87x = 111,090.21 × 50,302.73
4. Step 4: Simplify right side
   80,499.87x = 5,588,140,839.27
5. Step 5: Solve for x
   x = 5,588,140,839.27/80,499.87
6. Step 6: Final answer
   x = 69,418.01