Finding the Fourth Proportional to 80,829.58, 111,506.18 and 62,801.20

Step by Step Solution

1. Step 1: Write the proportion equation
   80,829.58 : 111,506.18 = 62,801.20 : x
2. Step 2: Convert to fraction form
   80,829.58/111,506.18 = 62,801.20/x
3. Step 3: Cross multiply
   80,829.58x = 111,506.18 × 62,801.20
4. Step 4: Simplify right side
   80,829.58x = 7,002,721,911.42
5. Step 5: Solve for x
   x = 7,002,721,911.42/80,829.58
6. Step 6: Final answer
   x = 86,635.63