Finding the Fourth Proportional to 314,913.15, 472,227.57 and 90,222.15

Step by Step Solution

1. Step 1: Write the proportion equation
   314,913.15 : 472,227.57 = 90,222.15 : x
2. Step 2: Convert to fraction form
   314,913.15/472,227.57 = 90,222.15/x
3. Step 3: Cross multiply
   314,913.15x = 472,227.57 × 90,222.15
4. Step 4: Simplify right side
   314,913.15x = 42,605,388,425.53
5. Step 5: Solve for x
   x = 42,605,388,425.53/314,913.15
6. Step 6: Final answer
   x = 135,292.50