Finding the Fourth Proportional to 259,364.50, 388,953.16 and 109,616.38

Step by Step Solution

1. Step 1: Write the proportion equation
   259,364.50 : 388,953.16 = 109,616.38 : x
2. Step 2: Convert to fraction form
   259,364.50/388,953.16 = 109,616.38/x
3. Step 3: Cross multiply
   259,364.50x = 388,953.16 × 109,616.38
4. Step 4: Simplify right side
   259,364.50x = 42,635,637,388.76
5. Step 5: Solve for x
   x = 42,635,637,388.76/259,364.50
6. Step 6: Final answer
   x = 164,385.02