Finding the Fourth Proportional to 80,985.83, 121,463.55 and 65,282.56

Step by Step Solution

1. Step 1: Write the proportion equation
   80,985.83 : 121,463.55 = 65,282.56 : x
2. Step 2: Convert to fraction form
   80,985.83/121,463.55 = 65,282.56/x
3. Step 3: Cross multiply
   80,985.83x = 121,463.55 × 65,282.56
4. Step 4: Simplify right side
   80,985.83x = 7,929,451,187.03
5. Step 5: Solve for x
   x = 7,929,451,187.03/80,985.83
6. Step 6: Final answer
   x = 97,911.59