Finding the Fourth Proportional to 426,164.25, 639,247.59 and 110,623.89

Step by Step Solution

1. Step 1: Write the proportion equation
   426,164.25 : 639,247.59 = 110,623.89 : x
2. Step 2: Convert to fraction form
   426,164.25/639,247.59 = 110,623.89/x
3. Step 3: Cross multiply
   426,164.25x = 639,247.59 × 110,623.89
4. Step 4: Simplify right side
   426,164.25x = 70,716,055,078.93
5. Step 5: Solve for x
   x = 70,716,055,078.93/426,164.25
6. Step 6: Final answer
   x = 165,936.15