Finding the Fourth Proportional to 105,906.89, 158,882.21 and 31,029.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105,906.89 : 158,882.21 = 31,029.47 : x
2. Step 2: Convert to fraction form
   105,906.89/158,882.21 = 31,029.47/x
3. Step 3: Cross multiply
   105,906.89x = 158,882.21 × 31,029.47
4. Step 4: Simplify right side
   105,906.89x = 4,930,030,613.58
5. Step 5: Solve for x
   x = 4,930,030,613.58/105,906.89
6. Step 6: Final answer
   x = 46,550.61