Finding the Fourth Proportional to 70,109.79, 105,164.96 and 17,519.33

Step by Step Solution

1. Step 1: Write the proportion equation
   70,109.79 : 105,164.96 = 17,519.33 : x
2. Step 2: Convert to fraction form
   70,109.79/105,164.96 = 17,519.33/x
3. Step 3: Cross multiply
   70,109.79x = 105,164.96 × 17,519.33
4. Step 4: Simplify right side
   70,109.79x = 1,842,419,025.26
5. Step 5: Solve for x
   x = 1,842,419,025.26/70,109.79
6. Step 6: Final answer
   x = 26,279.05