Finding the Fourth Proportional to 259,047.37, 388,623.45 and 109,287.99

Step by Step Solution

1. Step 1: Write the proportion equation
   259,047.37 : 388,623.45 = 109,287.99 : x
2. Step 2: Convert to fraction form
   259,047.37/388,623.45 = 109,287.99/x
3. Step 3: Cross multiply
   259,047.37x = 388,623.45 × 109,287.99
4. Step 4: Simplify right side
   259,047.37x = 42,471,875,717.37
5. Step 5: Solve for x
   x = 42,471,875,717.37/259,047.37
6. Step 6: Final answer
   x = 163,954.09