Finding the Fourth Proportional to 70,379.88, 105,560.10 and 17,786.18

Step by Step Solution

1. Step 1: Write the proportion equation
   70,379.88 : 105,560.10 = 17,786.18 : x
2. Step 2: Convert to fraction form
   70,379.88/105,560.10 = 17,786.18/x
3. Step 3: Cross multiply
   70,379.88x = 105,560.10 × 17,786.18
4. Step 4: Simplify right side
   70,379.88x = 1,877,510,411.62
5. Step 5: Solve for x
   x = 1,877,510,411.62/70,379.88
6. Step 6: Final answer
   x = 26,676.81