Finding the Fourth Proportional to 150,972.31, 208,344.38 and 82,992.15

Step by Step Solution

1. Step 1: Write the proportion equation
   150,972.31 : 208,344.38 = 82,992.15 : x
2. Step 2: Convert to fraction form
   150,972.31/208,344.38 = 82,992.15/x
3. Step 3: Cross multiply
   150,972.31x = 208,344.38 × 82,992.15
4. Step 4: Simplify right side
   150,972.31x = 17,290,947,035.69
5. Step 5: Solve for x
   x = 17,290,947,035.69/150,972.31
6. Step 6: Final answer
   x = 114,530.59