Finding the Fourth Proportional to 326,909.31, 490,363.25 and 87,023.27

Step by Step Solution

1. Step 1: Write the proportion equation
   326,909.31 : 490,363.25 = 87,023.27 : x
2. Step 2: Convert to fraction form
   326,909.31/490,363.25 = 87,023.27/x
3. Step 3: Cross multiply
   326,909.31x = 490,363.25 × 87,023.27
4. Step 4: Simplify right side
   326,909.31x = 42,673,010,615.89
5. Step 5: Solve for x
   x = 42,673,010,615.89/326,909.31
6. Step 6: Final answer
   x = 130,534.71