Finding the Fourth Proportional to 99,823.73, 137,723.67 and 65,849.09

Step by Step Solution

1. Step 1: Write the proportion equation
   99,823.73 : 137,723.67 = 65,849.09 : x
2. Step 2: Convert to fraction form
   99,823.73/137,723.67 = 65,849.09/x
3. Step 3: Cross multiply
   99,823.73x = 137,723.67 × 65,849.09
4. Step 4: Simplify right side
   99,823.73x = 9,068,978,340.96
5. Step 5: Solve for x
   x = 9,068,978,340.96/99,823.73
6. Step 6: Final answer
   x = 90,849.92