Finding the Fourth Proportional to 105,250.69, 145,058.07 and 79,696

Step by Step Solution

1. Step 1: Write the proportion equation
   105,250.69 : 145,058.07 = 79,696 : x
2. Step 2: Convert to fraction form
   105,250.69/145,058.07 = 79,696/x
3. Step 3: Cross multiply
   105,250.69x = 145,058.07 × 79,696
4. Step 4: Simplify right side
   105,250.69x = 11,560,547,946.72
5. Step 5: Solve for x
   x = 11,560,547,946.72/105,250.69
6. Step 6: Final answer
   x = 109,838.22