Finding the Fourth Proportional to 131,673, 181,709.10 and 72,057

Step by Step Solution

1. Step 1: Write the proportion equation
   131,673 : 181,709.10 = 72,057 : x
2. Step 2: Convert to fraction form
   131,673/181,709.10 = 72,057/x
3. Step 3: Cross multiply
   131,673x = 181,709.10 × 72,057
4. Step 4: Simplify right side
   131,673x = 13,093,412,618.70
5. Step 5: Solve for x
   x = 13,093,412,618.70/131,673
6. Step 6: Final answer
   x = 99,438.86