Finding the Fourth Proportional to 148,890.66, 205,469.37 and 80,907

Step by Step Solution

1. Step 1: Write the proportion equation
   148,890.66 : 205,469.37 = 80,907 : x
2. Step 2: Convert to fraction form
   148,890.66/205,469.37 = 80,907/x
3. Step 3: Cross multiply
   148,890.66x = 205,469.37 × 80,907
4. Step 4: Simplify right side
   148,890.66x = 16,623,910,318.59
5. Step 5: Solve for x
   x = 16,623,910,318.59/148,890.66
6. Step 6: Final answer
   x = 111,651.80