Finding the Fourth Proportional to 150,420.16, 207,579.86 and 82,439.83

Step by Step Solution

1. Step 1: Write the proportion equation
   150,420.16 : 207,579.86 = 82,439.83 : x
2. Step 2: Convert to fraction form
   150,420.16/207,579.86 = 82,439.83/x
3. Step 3: Cross multiply
   150,420.16x = 207,579.86 × 82,439.83
4. Step 4: Simplify right side
   150,420.16x = 17,112,848,369.82
5. Step 5: Solve for x
   x = 17,112,848,369.82/150,420.16
6. Step 6: Final answer
   x = 113,766.99