Finding the Fourth Proportional to 105,706.68, 158,452.56 and 66,291.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,706.68 : 158,452.56 = 66,291.27 : x
2. Step 2: Convert to fraction form
   105,706.68/158,452.56 = 66,291.27/x
3. Step 3: Cross multiply
   105,706.68x = 158,452.56 × 66,291.27
4. Step 4: Simplify right side
   105,706.68x = 10,504,021,437.15
5. Step 5: Solve for x
   x = 10,504,021,437.15/105,706.68
6. Step 6: Final answer
   x = 99,369.51