Finding the Fourth Proportional to 124,676.25, 172,109.86 and 79,416.28

Step by Step Solution

1. Step 1: Write the proportion equation
   124,676.25 : 172,109.86 = 79,416.28 : x
2. Step 2: Convert to fraction form
   124,676.25/172,109.86 = 79,416.28/x
3. Step 3: Cross multiply
   124,676.25x = 172,109.86 × 79,416.28
4. Step 4: Simplify right side
   124,676.25x = 13,668,325,295.83
5. Step 5: Solve for x
   x = 13,668,325,295.83/124,676.25
6. Step 6: Final answer
   x = 109,630.55