Finding the Fourth Proportional to 163,760.16, 245,752.98 and 57,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   163,760.16 : 245,752.98 = 57,144.72 : x
2. Step 2: Convert to fraction form
   163,760.16/245,752.98 = 57,144.72/x
3. Step 3: Cross multiply
   163,760.16x = 245,752.98 × 57,144.72
4. Step 4: Simplify right side
   163,760.16x = 14,043,485,231.27
5. Step 5: Solve for x
   x = 14,043,485,231.27/163,760.16
6. Step 6: Final answer
   x = 85,756.42