Finding the Fourth Proportional to 91,673.98, 137,297.73 and 89,151.44

Step by Step Solution

1. Step 1: Write the proportion equation
   91,673.98 : 137,297.73 = 89,151.44 : x
2. Step 2: Convert to fraction form
   91,673.98/137,297.73 = 89,151.44/x
3. Step 3: Cross multiply
   91,673.98x = 137,297.73 × 89,151.44
4. Step 4: Simplify right side
   91,673.98x = 12,240,289,986.06
5. Step 5: Solve for x
   x = 12,240,289,986.06/91,673.98
6. Step 6: Final answer
   x = 133,519.79