Finding the Fourth Proportional to 57,441.12, 79,329.18 and 51,179.40

Step by Step Solution

1. Step 1: Write the proportion equation
   57,441.12 : 79,329.18 = 51,179.40 : x
2. Step 2: Convert to fraction form
   57,441.12/79,329.18 = 51,179.40/x
3. Step 3: Cross multiply
   57,441.12x = 79,329.18 × 51,179.40
4. Step 4: Simplify right side
   57,441.12x = 4,060,019,834.89
5. Step 5: Solve for x
   x = 4,060,019,834.89/57,441.12
6. Step 6: Final answer
   x = 70,681.42