Finding the Fourth Proportional to 245,978.52, 368,968.05 and 68,485.92

Step by Step Solution

1. Step 1: Write the proportion equation
   245,978.52 : 368,968.05 = 68,485.92 : x
2. Step 2: Convert to fraction form
   245,978.52/368,968.05 = 68,485.92/x
3. Step 3: Cross multiply
   245,978.52x = 368,968.05 × 68,485.92
4. Step 4: Simplify right side
   245,978.52x = 25,269,116,354.86
5. Step 5: Solve for x
   x = 25,269,116,354.86/245,978.52
6. Step 6: Final answer
   x = 102,728.96