Finding the Fourth Proportional to 300,375.89, 450,493.76 and 87,086.56

Step by Step Solution

1. Step 1: Write the proportion equation
   300,375.89 : 450,493.76 = 87,086.56 : x
2. Step 2: Convert to fraction form
   300,375.89/450,493.76 = 87,086.56/x
3. Step 3: Cross multiply
   300,375.89x = 450,493.76 × 87,086.56
4. Step 4: Simplify right side
   300,375.89x = 39,231,952,317.65
5. Step 5: Solve for x
   x = 39,231,952,317.65/300,375.89
6. Step 6: Final answer
   x = 130,609.52