Finding the Fourth Proportional to 150,435.59, 225,294.69 and 87,121.94

Step by Step Solution

1. Step 1: Write the proportion equation
   150,435.59 : 225,294.69 = 87,121.94 : x
2. Step 2: Convert to fraction form
   150,435.59/225,294.69 = 87,121.94/x
3. Step 3: Cross multiply
   150,435.59x = 225,294.69 × 87,121.94
4. Step 4: Simplify right side
   150,435.59x = 19,628,110,464.50
5. Step 5: Solve for x
   x = 19,628,110,464.50/150,435.59
6. Step 6: Final answer
   x = 130,475.18