Finding the Fourth Proportional to 81,849.49, 122,507.84 and 45,766.42

Step by Step Solution

1. Step 1: Write the proportion equation
   81,849.49 : 122,507.84 = 45,766.42 : x
2. Step 2: Convert to fraction form
   81,849.49/122,507.84 = 45,766.42/x
3. Step 3: Cross multiply
   81,849.49x = 122,507.84 × 45,766.42
4. Step 4: Simplify right side
   81,849.49x = 5,606,745,066.88
5. Step 5: Solve for x
   x = 5,606,745,066.88/81,849.49
6. Step 6: Final answer
   x = 68,500.67