Finding the Fourth Proportional to 70,645.89, 105,968.57 and 18,055.29

Step by Step Solution

1. Step 1: Write the proportion equation
   70,645.89 : 105,968.57 = 18,055.29 : x
2. Step 2: Convert to fraction form
   70,645.89/105,968.57 = 18,055.29/x
3. Step 3: Cross multiply
   70,645.89x = 105,968.57 × 18,055.29
4. Step 4: Simplify right side
   70,645.89x = 1,913,293,171.96
5. Step 5: Solve for x
   x = 1,913,293,171.96/70,645.89
6. Step 6: Final answer
   x = 27,082.87