Finding the Fourth Proportional to 289,498.50, 399,507.94 and 162,174.06

Step by Step Solution

1. Step 1: Write the proportion equation
   289,498.50 : 399,507.94 = 162,174.06 : x
2. Step 2: Convert to fraction form
   289,498.50/399,507.94 = 162,174.06/x
3. Step 3: Cross multiply
   289,498.50x = 399,507.94 × 162,174.06
4. Step 4: Simplify right side
   289,498.50x = 64,789,824,632.04
5. Step 5: Solve for x
   x = 64,789,824,632.04/289,498.50
6. Step 6: Final answer
   x = 223,800.21