Finding the Fourth Proportional to 428,080.59, 590,743.98 and 237,089.88

Step by Step Solution

1. Step 1: Write the proportion equation
   428,080.59 : 590,743.98 = 237,089.88 : x
2. Step 2: Convert to fraction form
   428,080.59/590,743.98 = 237,089.88/x
3. Step 3: Cross multiply
   428,080.59x = 590,743.98 × 237,089.88
4. Step 4: Simplify right side
   428,080.59x = 140,059,419,328.92
5. Step 5: Solve for x
   x = 140,059,419,328.92/428,080.59
6. Step 6: Final answer
   x = 327,180.03