Finding the Fourth Proportional to 51,132.60, 76,596.72 and 40,620.42

Step by Step Solution

1. Step 1: Write the proportion equation
   51,132.60 : 76,596.72 = 40,620.42 : x
2. Step 2: Convert to fraction form
   51,132.60/76,596.72 = 40,620.42/x
3. Step 3: Cross multiply
   51,132.60x = 76,596.72 × 40,620.42
4. Step 4: Simplify right side
   51,132.60x = 3,111,390,937.02
5. Step 5: Solve for x
   x = 3,111,390,937.02/51,132.60
6. Step 6: Final answer
   x = 60,849.46