Finding the Fourth Proportional to 150,906.57, 208,238.61 and 82,920.03

Step by Step Solution

1. Step 1: Write the proportion equation
   150,906.57 : 208,238.61 = 82,920.03 : x
2. Step 2: Convert to fraction form
   150,906.57/208,238.61 = 82,920.03/x
3. Step 3: Cross multiply
   150,906.57x = 208,238.61 × 82,920.03
4. Step 4: Simplify right side
   150,906.57x = 17,267,151,373.76
5. Step 5: Solve for x
   x = 17,267,151,373.76/150,906.57
6. Step 6: Final answer
   x = 114,422.79