Finding the Fourth Proportional to 80,816.42, 111,518.67 and 45,009.76

Step by Step Solution

1. Step 1: Write the proportion equation
   80,816.42 : 111,518.67 = 45,009.76 : x
2. Step 2: Convert to fraction form
   80,816.42/111,518.67 = 45,009.76/x
3. Step 3: Cross multiply
   80,816.42x = 111,518.67 × 45,009.76
4. Step 4: Simplify right side
   80,816.42x = 5,019,428,572.22
5. Step 5: Solve for x
   x = 5,019,428,572.22/80,816.42
6. Step 6: Final answer
   x = 62,109.02