Finding the Fourth Proportional to 50,658.72, 69,524.40 and 47,690.88

Step by Step Solution

1. Step 1: Write the proportion equation
   50,658.72 : 69,524.40 = 47,690.88 : x
2. Step 2: Convert to fraction form
   50,658.72/69,524.40 = 47,690.88/x
3. Step 3: Cross multiply
   50,658.72x = 69,524.40 × 47,690.88
4. Step 4: Simplify right side
   50,658.72x = 3,315,679,817.47
5. Step 5: Solve for x
   x = 3,315,679,817.47/50,658.72
6. Step 6: Final answer
   x = 65,451.31