Finding the Fourth Proportional to 476,967.47, 658,071.56 and 285,911.15

Step by Step Solution

1. Step 1: Write the proportion equation
   476,967.47 : 658,071.56 = 285,911.15 : x
2. Step 2: Convert to fraction form
   476,967.47/658,071.56 = 285,911.15/x
3. Step 3: Cross multiply
   476,967.47x = 658,071.56 × 285,911.15
4. Step 4: Simplify right side
   476,967.47x = 188,149,996,501.89
5. Step 5: Solve for x
   x = 188,149,996,501.89/476,967.47
6. Step 6: Final answer
   x = 394,471.34