Finding the Fourth Proportional to 105,731.37, 158,581.62 and 30,831.39

Step by Step Solution

1. Step 1: Write the proportion equation
   105,731.37 : 158,581.62 = 30,831.39 : x
2. Step 2: Convert to fraction form
   105,731.37/158,581.62 = 30,831.39/x
3. Step 3: Cross multiply
   105,731.37x = 158,581.62 × 30,831.39
4. Step 4: Simplify right side
   105,731.37x = 4,889,291,773.05
5. Step 5: Solve for x
   x = 4,889,291,773.05/105,731.37
6. Step 6: Final answer
   x = 46,242.58