Finding the Fourth Proportional to 425,399.64, 638,111.82 and 159,109.34

Step by Step Solution

1. Step 1: Write the proportion equation
   425,399.64 : 638,111.82 = 159,109.34 : x
2. Step 2: Convert to fraction form
   425,399.64/638,111.82 = 159,109.34/x
3. Step 3: Cross multiply
   425,399.64x = 638,111.82 × 159,109.34
4. Step 4: Simplify right side
   425,399.64x = 101,529,550,526.40
5. Step 5: Solve for x
   x = 101,529,550,526.40/425,399.64
6. Step 6: Final answer
   x = 238,668.63