Finding the Fourth Proportional to 309,828.10, 464,732.55 and 88,212.10

Step by Step Solution

1. Step 1: Write the proportion equation
   309,828.10 : 464,732.55 = 88,212.10 : x
2. Step 2: Convert to fraction form
   309,828.10/464,732.55 = 88,212.10/x
3. Step 3: Cross multiply
   309,828.10x = 464,732.55 × 88,212.10
4. Step 4: Simplify right side
   309,828.10x = 40,995,034,173.86
5. Step 5: Solve for x
   x = 40,995,034,173.86/309,828.10
6. Step 6: Final answer
   x = 132,315.42