Finding the Fourth Proportional to 105,665.96, 158,490.86 and 30,786.68

Step by Step Solution

1. Step 1: Write the proportion equation
   105,665.96 : 158,490.86 = 30,786.68 : x
2. Step 2: Convert to fraction form
   105,665.96/158,490.86 = 30,786.68/x
3. Step 3: Cross multiply
   105,665.96x = 158,490.86 × 30,786.68
4. Step 4: Simplify right side
   105,665.96x = 4,879,407,389.74
5. Step 5: Solve for x
   x = 4,879,407,389.74/105,665.96
6. Step 6: Final answer
   x = 46,177.67