Finding the Fourth Proportional to 85,356.56, 128,103.32 and 38,613.52

Step by Step Solution

1. Step 1: Write the proportion equation
   85,356.56 : 128,103.32 = 38,613.52 : x
2. Step 2: Convert to fraction form
   85,356.56/128,103.32 = 38,613.52/x
3. Step 3: Cross multiply
   85,356.56x = 128,103.32 × 38,613.52
4. Step 4: Simplify right side
   85,356.56x = 4,946,520,108.89
5. Step 5: Solve for x
   x = 4,946,520,108.89/85,356.56
6. Step 6: Final answer
   x = 57,951.26