Finding the Fourth Proportional to 150,105.86, 207,147.61 and 82,121.34

Step by Step Solution

1. Step 1: Write the proportion equation
   150,105.86 : 207,147.61 = 82,121.34 : x
2. Step 2: Convert to fraction form
   150,105.86/207,147.61 = 82,121.34/x
3. Step 3: Cross multiply
   150,105.86x = 207,147.61 × 82,121.34
4. Step 4: Simplify right side
   150,105.86x = 17,011,238,900.39
5. Step 5: Solve for x
   x = 17,011,238,900.39/150,105.86
6. Step 6: Final answer
   x = 113,328.28