Finding the Fourth Proportional to 427,196.16, 589,485.60 and 236,178.72

Step by Step Solution

1. Step 1: Write the proportion equation
   427,196.16 : 589,485.60 = 236,178.72 : x
2. Step 2: Convert to fraction form
   427,196.16/589,485.60 = 236,178.72/x
3. Step 3: Cross multiply
   427,196.16x = 589,485.60 × 236,178.72
4. Step 4: Simplify right side
   427,196.16x = 139,223,954,466.43
5. Step 5: Solve for x
   x = 139,223,954,466.43/427,196.16
6. Step 6: Final answer
   x = 325,901.70