Finding the Fourth Proportional to 144,247.69, 199,114.73 and 86,889.51

Step by Step Solution

1. Step 1: Write the proportion equation
   144,247.69 : 199,114.73 = 86,889.51 : x
2. Step 2: Convert to fraction form
   144,247.69/199,114.73 = 86,889.51/x
3. Step 3: Cross multiply
   144,247.69x = 199,114.73 × 86,889.51
4. Step 4: Simplify right side
   144,247.69x = 17,300,981,459.25
5. Step 5: Solve for x
   x = 17,300,981,459.25/144,247.69
6. Step 6: Final answer
   x = 119,939.40