Finding the Fourth Proportional to 389,426.40, 584,100.72 and 108,946.08

Step by Step Solution

1. Step 1: Write the proportion equation
   389,426.40 : 584,100.72 = 108,946.08 : x
2. Step 2: Convert to fraction form
   389,426.40/584,100.72 = 108,946.08/x
3. Step 3: Cross multiply
   389,426.40x = 584,100.72 × 108,946.08
4. Step 4: Simplify right side
   389,426.40x = 63,635,483,769.18
5. Step 5: Solve for x
   x = 63,635,483,769.18/389,426.40
6. Step 6: Final answer
   x = 163,408.24