Finding the Fourth Proportional to 266,786.71, 400,180.71 and 109,015.15

Step by Step Solution

1. Step 1: Write the proportion equation
   266,786.71 : 400,180.71 = 109,015.15 : x
2. Step 2: Convert to fraction form
   266,786.71/400,180.71 = 109,015.15/x
3. Step 3: Cross multiply
   266,786.71x = 400,180.71 × 109,015.15
4. Step 4: Simplify right side
   266,786.71x = 43,625,760,127.76
5. Step 5: Solve for x
   x = 43,625,760,127.76/266,786.71
6. Step 6: Final answer
   x = 163,522.99