Finding the Fourth Proportional to 105,801.69, 158,712.77 and 30,920.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,801.69 : 158,712.77 = 30,920.14 : x
2. Step 2: Convert to fraction form
   105,801.69/158,712.77 = 30,920.14/x
3. Step 3: Cross multiply
   105,801.69x = 158,712.77 × 30,920.14
4. Step 4: Simplify right side
   105,801.69x = 4,907,421,068.19
5. Step 5: Solve for x
   x = 4,907,421,068.19/105,801.69
6. Step 6: Final answer
   x = 46,383.20