Finding the Fourth Proportional to 150,429.98, 207,614.10 and 86,766.38

Step by Step Solution

1. Step 1: Write the proportion equation
   150,429.98 : 207,614.10 = 86,766.38 : x
2. Step 2: Convert to fraction form
   150,429.98/207,614.10 = 86,766.38/x
3. Step 3: Cross multiply
   150,429.98x = 207,614.10 × 86,766.38
4. Step 4: Simplify right side
   150,429.98x = 18,013,923,893.96
5. Step 5: Solve for x
   x = 18,013,923,893.96/150,429.98
6. Step 6: Final answer
   x = 119,749.56