Finding the Fourth Proportional to 105,918.84, 158,879.52 and 31,040.46

Step by Step Solution

1. Step 1: Write the proportion equation
   105,918.84 : 158,879.52 = 31,040.46 : x
2. Step 2: Convert to fraction form
   105,918.84/158,879.52 = 31,040.46/x
3. Step 3: Cross multiply
   105,918.84x = 158,879.52 × 31,040.46
4. Step 4: Simplify right side
   105,918.84x = 4,931,693,385.38
5. Step 5: Solve for x
   x = 4,931,693,385.38/105,918.84
6. Step 6: Final answer
   x = 46,561.06