Finding the Fourth Proportional to 141,215.39, 195,003.81 and 105,343.12

Step by Step Solution

1. Step 1: Write the proportion equation
   141,215.39 : 195,003.81 = 105,343.12 : x
2. Step 2: Convert to fraction form
   141,215.39/195,003.81 = 105,343.12/x
3. Step 3: Cross multiply
   141,215.39x = 195,003.81 × 105,343.12
4. Step 4: Simplify right side
   141,215.39x = 20,542,309,269.78
5. Step 5: Solve for x
   x = 20,542,309,269.78/141,215.39
6. Step 6: Final answer
   x = 145,467.93