Finding the Fourth Proportional to 80,885.21, 111,621.69 and 45,074.43

Step by Step Solution

1. Step 1: Write the proportion equation
   80,885.21 : 111,621.69 = 45,074.43 : x
2. Step 2: Convert to fraction form
   80,885.21/111,621.69 = 45,074.43/x
3. Step 3: Cross multiply
   80,885.21x = 111,621.69 × 45,074.43
4. Step 4: Simplify right side
   80,885.21x = 5,031,284,052.39
5. Step 5: Solve for x
   x = 5,031,284,052.39/80,885.21
6. Step 6: Final answer
   x = 62,202.77