Finding the Fourth Proportional to 428,086.80, 590,727.27 and 237,096.09

Step by Step Solution

1. Step 1: Write the proportion equation
   428,086.80 : 590,727.27 = 237,096.09 : x
2. Step 2: Convert to fraction form
   428,086.80/590,727.27 = 237,096.09/x
3. Step 3: Cross multiply
   428,086.80x = 590,727.27 × 237,096.09
4. Step 4: Simplify right side
   428,086.80x = 140,059,123,533.98
5. Step 5: Solve for x
   x = 140,059,123,533.98/428,086.80
6. Step 6: Final answer
   x = 327,174.59