Finding the Fourth Proportional to 150,120.64, 207,164.71 and 82,136.82

Step by Step Solution

1. Step 1: Write the proportion equation
   150,120.64 : 207,164.71 = 82,136.82 : x
2. Step 2: Convert to fraction form
   150,120.64/207,164.71 = 82,136.82/x
3. Step 3: Cross multiply
   150,120.64x = 207,164.71 × 82,136.82
4. Step 4: Simplify right side
   150,120.64x = 17,015,850,495.62
5. Step 5: Solve for x
   x = 17,015,850,495.62/150,120.64
6. Step 6: Final answer
   x = 113,347.84