Finding the Fourth Proportional to 80,774.67, 121,435.69 and 65,089.83

Step by Step Solution

1. Step 1: Write the proportion equation
   80,774.67 : 121,435.69 = 65,089.83 : x
2. Step 2: Convert to fraction form
   80,774.67/121,435.69 = 65,089.83/x
3. Step 3: Cross multiply
   80,774.67x = 121,435.69 × 65,089.83
4. Step 4: Simplify right side
   80,774.67x = 7,904,228,418.03
5. Step 5: Solve for x
   x = 7,904,228,418.03/80,774.67
6. Step 6: Final answer
   x = 97,855.29