Finding the Fourth Proportional to 456,978.47, 630,607.87 and 253,023.71

Step by Step Solution

1. Step 1: Write the proportion equation
   456,978.47 : 630,607.87 = 253,023.71 : x
2. Step 2: Convert to fraction form
   456,978.47/630,607.87 = 253,023.71/x
3. Step 3: Cross multiply
   456,978.47x = 630,607.87 × 253,023.71
4. Step 4: Simplify right side
   456,978.47x = 159,558,743,766.56
5. Step 5: Solve for x
   x = 159,558,743,766.56/456,978.47
6. Step 6: Final answer
   x = 349,160.31