Finding the Fourth Proportional to 80,713.50, 111,354.55 and 50,487.34

Step by Step Solution

1. Step 1: Write the proportion equation
   80,713.50 : 111,354.55 = 50,487.34 : x
2. Step 2: Convert to fraction form
   80,713.50/111,354.55 = 50,487.34/x
3. Step 3: Cross multiply
   80,713.50x = 111,354.55 × 50,487.34
4. Step 4: Simplify right side
   80,713.50x = 5,621,995,026.40
5. Step 5: Solve for x
   x = 5,621,995,026.40/80,713.50
6. Step 6: Final answer
   x = 69,653.71