Finding the Fourth Proportional to 50,415.50, 69,573.40 and 28,059.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,415.50 : 69,573.40 = 28,059.50 : x
2. Step 2: Convert to fraction form
   50,415.50/69,573.40 = 28,059.50/x
3. Step 3: Cross multiply
   50,415.50x = 69,573.40 × 28,059.50
4. Step 4: Simplify right side
   50,415.50x = 1,952,194,817.30
5. Step 5: Solve for x
   x = 1,952,194,817.30/50,415.50
6. Step 6: Final answer
   x = 38,722.12