Finding the Fourth Proportional to 269,510.58, 371,910.83 and 154,709.48

Step by Step Solution

1. Step 1: Write the proportion equation
   269,510.58 : 371,910.83 = 154,709.48 : x
2. Step 2: Convert to fraction form
   269,510.58/371,910.83 = 154,709.48/x
3. Step 3: Cross multiply
   269,510.58x = 371,910.83 × 154,709.48
4. Step 4: Simplify right side
   269,510.58x = 57,538,131,271.90
5. Step 5: Solve for x
   x = 57,538,131,271.90/269,510.58
6. Step 6: Final answer
   x = 213,491.18