Finding the Fourth Proportional to 80,912.84, 111,613.98 and 50,645.61

Step by Step Solution

1. Step 1: Write the proportion equation
   80,912.84 : 111,613.98 = 50,645.61 : x
2. Step 2: Convert to fraction form
   80,912.84/111,613.98 = 50,645.61/x
3. Step 3: Cross multiply
   80,912.84x = 111,613.98 × 50,645.61
4. Step 4: Simplify right side
   80,912.84x = 5,652,758,101.63
5. Step 5: Solve for x
   x = 5,652,758,101.63/80,912.84
6. Step 6: Final answer
   x = 69,862.32