Finding the Fourth Proportional to 80,499.86, 111,090.22 and 50,302.74

Step by Step Solution

1. Step 1: Write the proportion equation
   80,499.86 : 111,090.22 = 50,302.74 : x
2. Step 2: Convert to fraction form
   80,499.86/111,090.22 = 50,302.74/x
3. Step 3: Cross multiply
   80,499.86x = 111,090.22 × 50,302.74
4. Step 4: Simplify right side
   80,499.86x = 5,588,142,453.20
5. Step 5: Solve for x
   x = 5,588,142,453.20/80,499.86
6. Step 6: Final answer
   x = 69,418.04