Finding the Fourth Proportional to 80,829.10, 111,547.61 and 45,019.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,829.10 : 111,547.61 = 45,019.12 : x
2. Step 2: Convert to fraction form
   80,829.10/111,547.61 = 45,019.12/x
3. Step 3: Cross multiply
   80,829.10x = 111,547.61 × 45,019.12
4. Step 4: Simplify right side
   80,829.10x = 5,021,775,240.30
5. Step 5: Solve for x
   x = 5,021,775,240.30/80,829.10
6. Step 6: Final answer
   x = 62,128.31