Finding the Fourth Proportional to 50,762.72, 70,052.64 and 28,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,762.72 : 70,052.64 = 28,406.72 : x
2. Step 2: Convert to fraction form
   50,762.72/70,052.64 = 28,406.72/x
3. Step 3: Cross multiply
   50,762.72x = 70,052.64 × 28,406.72
4. Step 4: Simplify right side
   50,762.72x = 1,989,965,729.74
5. Step 5: Solve for x
   x = 1,989,965,729.74/50,762.72
6. Step 6: Final answer
   x = 39,201.32