Finding the Fourth Proportional to 327,061.86, 490,587.93 and 90,399.30

Step by Step Solution

1. Step 1: Write the proportion equation
   327,061.86 : 490,587.93 = 90,399.30 : x
2. Step 2: Convert to fraction form
   327,061.86/490,587.93 = 90,399.30/x
3. Step 3: Cross multiply
   327,061.86x = 490,587.93 × 90,399.30
4. Step 4: Simplify right side
   327,061.86x = 44,348,805,460.45
5. Step 5: Solve for x
   x = 44,348,805,460.45/327,061.86
6. Step 6: Final answer
   x = 135,597.61