Finding the Fourth Proportional to 105,526.82, 158,289.92 and 81,546.02

Step by Step Solution

1. Step 1: Write the proportion equation
   105,526.82 : 158,289.92 = 81,546.02 : x
2. Step 2: Convert to fraction form
   105,526.82/158,289.92 = 81,546.02/x
3. Step 3: Cross multiply
   105,526.82x = 158,289.92 × 81,546.02
4. Step 4: Simplify right side
   105,526.82x = 12,907,912,982.12
5. Step 5: Solve for x
   x = 12,907,912,982.12/105,526.82
6. Step 6: Final answer
   x = 122,318.79