Finding the Fourth Proportional to 50,577.50, 69,799.14 and 28,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,577.50 : 69,799.14 = 28,221.50 : x
2. Step 2: Convert to fraction form
   50,577.50/69,799.14 = 28,221.50/x
3. Step 3: Cross multiply
   50,577.50x = 69,799.14 × 28,221.50
4. Step 4: Simplify right side
   50,577.50x = 1,969,836,429.51
5. Step 5: Solve for x
   x = 1,969,836,429.51/50,577.50
6. Step 6: Final answer
   x = 38,946.89