Finding the Fourth Proportional to 257,598.72, 386,280.96 and 80,052.48

Step by Step Solution

1. Step 1: Write the proportion equation
   257,598.72 : 386,280.96 = 80,052.48 : x
2. Step 2: Convert to fraction form
   257,598.72/386,280.96 = 80,052.48/x
3. Step 3: Cross multiply
   257,598.72x = 386,280.96 × 80,052.48
4. Step 4: Simplify right side
   257,598.72x = 30,922,748,824.78
5. Step 5: Solve for x
   x = 30,922,748,824.78/257,598.72
6. Step 6: Final answer
   x = 120,042.32