Finding the Fourth Proportional to 127,499.87, 191,074.83 and 80,668.91

Step by Step Solution

1. Step 1: Write the proportion equation
   127,499.87 : 191,074.83 = 80,668.91 : x
2. Step 2: Convert to fraction form
   127,499.87/191,074.83 = 80,668.91/x
3. Step 3: Cross multiply
   127,499.87x = 191,074.83 × 80,668.91
4. Step 4: Simplify right side
   127,499.87x = 15,413,797,309.16
5. Step 5: Solve for x
   x = 15,413,797,309.16/127,499.87
6. Step 6: Final answer
   x = 120,892.66