Finding the Fourth Proportional to 70,109.29, 105,164.21 and 17,518.83

Step by Step Solution

1. Step 1: Write the proportion equation
   70,109.29 : 105,164.21 = 17,518.83 : x
2. Step 2: Convert to fraction form
   70,109.29/105,164.21 = 17,518.83/x
3. Step 3: Cross multiply
   70,109.29x = 105,164.21 × 17,518.83
4. Step 4: Simplify right side
   70,109.29x = 1,842,353,917.07
5. Step 5: Solve for x
   x = 1,842,353,917.07/70,109.29
6. Step 6: Final answer
   x = 26,278.31