Finding the Fourth Proportional to 245,221, 365,685.59 and 242,978.92

Step by Step Solution

1. Step 1: Write the proportion equation
   245,221 : 365,685.59 = 242,978.92 : x
2. Step 2: Convert to fraction form
   245,221/365,685.59 = 242,978.92/x
3. Step 3: Cross multiply
   245,221x = 365,685.59 × 242,978.92
4. Step 4: Simplify right side
   245,221x = 88,853,889,717.76
5. Step 5: Solve for x
   x = 88,853,889,717.76/245,221
6. Step 6: Final answer
   x = 362,342.09