Finding the Fourth Proportional to 80,487.18, 120,849.24 and 45,017.98

Step by Step Solution

1. Step 1: Write the proportion equation
   80,487.18 : 120,849.24 = 45,017.98 : x
2. Step 2: Convert to fraction form
   80,487.18/120,849.24 = 45,017.98/x
3. Step 3: Cross multiply
   80,487.18x = 120,849.24 × 45,017.98
4. Step 4: Simplify right side
   80,487.18x = 5,440,388,669.34
5. Step 5: Solve for x
   x = 5,440,388,669.34/80,487.18
6. Step 6: Final answer
   x = 67,593.23