Finding the Fourth Proportional to 80,808.31, 121,078.82 and 41,311.09

Step by Step Solution

1. Step 1: Write the proportion equation
   80,808.31 : 121,078.82 = 41,311.09 : x
2. Step 2: Convert to fraction form
   80,808.31/121,078.82 = 41,311.09/x
3. Step 3: Cross multiply
   80,808.31x = 121,078.82 × 41,311.09
4. Step 4: Simplify right side
   80,808.31x = 5,001,897,823.56
5. Step 5: Solve for x
   x = 5,001,897,823.56/80,808.31
6. Step 6: Final answer
   x = 61,898.31