Finding the Fourth Proportional to 50,665.32, 75,957.06 and 21,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50,665.32 : 75,957.06 = 21,105.42 : x
2. Step 2: Convert to fraction form
   50,665.32/75,957.06 = 21,105.42/x
3. Step 3: Cross multiply
   50,665.32x = 75,957.06 × 21,105.42
4. Step 4: Simplify right side
   50,665.32x = 1,603,105,653.27
5. Step 5: Solve for x
   x = 1,603,105,653.27/50,665.32
6. Step 6: Final answer
   x = 31,641.08