Finding the Fourth Proportional to 105,666, 158,389.80 and 35,521.68

Step by Step Solution

1. Step 1: Write the proportion equation
   105,666 : 158,389.80 = 35,521.68 : x
2. Step 2: Convert to fraction form
   105,666/158,389.80 = 35,521.68/x
3. Step 3: Cross multiply
   105,666x = 158,389.80 × 35,521.68
4. Step 4: Simplify right side
   105,666x = 5,626,271,790.86
5. Step 5: Solve for x
   x = 5,626,271,790.86/105,666
6. Step 6: Final answer
   x = 53,245.81