Finding the Fourth Proportional to 105,974.33, 158,986.12 and 31,091.45

Step by Step Solution

1. Step 1: Write the proportion equation
   105,974.33 : 158,986.12 = 31,091.45 : x
2. Step 2: Convert to fraction form
   105,974.33/158,986.12 = 31,091.45/x
3. Step 3: Cross multiply
   105,974.33x = 158,986.12 × 31,091.45
4. Step 4: Simplify right side
   105,974.33x = 4,943,108,845.22
5. Step 5: Solve for x
   x = 4,943,108,845.22/105,974.33
6. Step 6: Final answer
   x = 46,644.40