Finding the Fourth Proportional to 50,565.78, 69,754.71 and 31,438.30

Step by Step Solution

1. Step 1: Write the proportion equation
   50,565.78 : 69,754.71 = 31,438.30 : x
2. Step 2: Convert to fraction form
   50,565.78/69,754.71 = 31,438.30/x
3. Step 3: Cross multiply
   50,565.78x = 69,754.71 × 31,438.30
4. Step 4: Simplify right side
   50,565.78x = 2,192,969,499.39
5. Step 5: Solve for x
   x = 2,192,969,499.39/50,565.78
6. Step 6: Final answer
   x = 43,368.65