Finding the Fourth Proportional to 428,139.47, 590,851.92 and 237,152.84

Step by Step Solution

1. Step 1: Write the proportion equation
   428,139.47 : 590,851.92 = 237,152.84 : x
2. Step 2: Convert to fraction form
   428,139.47/590,851.92 = 237,152.84/x
3. Step 3: Cross multiply
   428,139.47x = 590,851.92 × 237,152.84
4. Step 4: Simplify right side
   428,139.47x = 140,122,210,847.45
5. Step 5: Solve for x
   x = 140,122,210,847.45/428,139.47
6. Step 6: Final answer
   x = 327,281.69