Finding the Fourth Proportional to 50,385.27, 69,502.80 and 31,489.59

Step by Step Solution

1. Step 1: Write the proportion equation
   50,385.27 : 69,502.80 = 31,489.59 : x
2. Step 2: Convert to fraction form
   50,385.27/69,502.80 = 31,489.59/x
3. Step 3: Cross multiply
   50,385.27x = 69,502.80 × 31,489.59
4. Step 4: Simplify right side
   50,385.27x = 2,188,614,675.85
5. Step 5: Solve for x
   x = 2,188,614,675.85/50,385.27
6. Step 6: Final answer
   x = 43,437.59