Finding the Fourth Proportional to 70,677.12, 106,015.59 and 18,086.62

Step by Step Solution

1. Step 1: Write the proportion equation
   70,677.12 : 106,015.59 = 18,086.62 : x
2. Step 2: Convert to fraction form
   70,677.12/106,015.59 = 18,086.62/x
3. Step 3: Cross multiply
   70,677.12x = 106,015.59 × 18,086.62
4. Step 4: Simplify right side
   70,677.12x = 1,917,463,690.41
5. Step 5: Solve for x
   x = 1,917,463,690.41/70,677.12
6. Step 6: Final answer
   x = 27,129.91