Finding the Fourth Proportional to 81,089.42, 111,902.34 and 45,280.04

Step by Step Solution

1. Step 1: Write the proportion equation
   81,089.42 : 111,902.34 = 45,280.04 : x
2. Step 2: Convert to fraction form
   81,089.42/111,902.34 = 45,280.04/x
3. Step 3: Cross multiply
   81,089.42x = 111,902.34 × 45,280.04
4. Step 4: Simplify right side
   81,089.42x = 5,066,942,431.29
5. Step 5: Solve for x
   x = 5,066,942,431.29/81,089.42
6. Step 6: Final answer
   x = 62,485.86