Finding the Fourth Proportional to 108,057.42, 149,198.25 and 69,839.58

Step by Step Solution

1. Step 1: Write the proportion equation
   108,057.42 : 149,198.25 = 69,839.58 : x
2. Step 2: Convert to fraction form
   108,057.42/149,198.25 = 69,839.58/x
3. Step 3: Cross multiply
   108,057.42x = 149,198.25 × 69,839.58
4. Step 4: Simplify right side
   108,057.42x = 10,419,943,116.74
5. Step 5: Solve for x
   x = 10,419,943,116.74/108,057.42
6. Step 6: Final answer
   x = 96,429.69