Finding the Fourth Proportional to 428,196.28, 590,867.81 and 237,173.98

Step by Step Solution

1. Step 1: Write the proportion equation
   428,196.28 : 590,867.81 = 237,173.98 : x
2. Step 2: Convert to fraction form
   428,196.28/590,867.81 = 237,173.98/x
3. Step 3: Cross multiply
   428,196.28x = 590,867.81 × 237,173.98
4. Step 4: Simplify right side
   428,196.28x = 140,138,468,818.77
5. Step 5: Solve for x
   x = 140,138,468,818.77/428,196.28
6. Step 6: Final answer
   x = 327,276.24