Finding the Fourth Proportional to 151,462.01, 209,021.78 and 86,936.78

Step by Step Solution

1. Step 1: Write the proportion equation
   151,462.01 : 209,021.78 = 86,936.78 : x
2. Step 2: Convert to fraction form
   151,462.01/209,021.78 = 86,936.78/x
3. Step 3: Cross multiply
   151,462.01x = 209,021.78 × 86,936.78
4. Step 4: Simplify right side
   151,462.01x = 18,171,680,503.07
5. Step 5: Solve for x
   x = 18,171,680,503.07/151,462.01
6. Step 6: Final answer
   x = 119,975.17