Finding the Fourth Proportional to 105,929.16, 158,746.12 and 79,603.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,929.16 : 158,746.12 = 79,603.15 : x
2. Step 2: Convert to fraction form
   105,929.16/158,746.12 = 79,603.15/x
3. Step 3: Cross multiply
   105,929.16x = 158,746.12 × 79,603.15
4. Step 4: Simplify right side
   105,929.16x = 12,636,691,202.28
5. Step 5: Solve for x
   x = 12,636,691,202.28/105,929.16
6. Step 6: Final answer
   x = 119,293.79