Finding the Fourth Proportional to 105,920.33, 158,902.38 and 31,042.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,920.33 : 158,902.38 = 31,042.93 : x
2. Step 2: Convert to fraction form
   105,920.33/158,902.38 = 31,042.93/x
3. Step 3: Cross multiply
   105,920.33x = 158,902.38 × 31,042.93
4. Step 4: Simplify right side
   105,920.33x = 4,932,795,459.17
5. Step 5: Solve for x
   x = 4,932,795,459.17/105,920.33
6. Step 6: Final answer
   x = 46,570.81