Finding the Fourth Proportional to 50,109.71, 69,157.22 and 28,889.73

Step by Step Solution

1. Step 1: Write the proportion equation
   50,109.71 : 69,157.22 = 28,889.73 : x
2. Step 2: Convert to fraction form
   50,109.71/69,157.22 = 28,889.73/x
3. Step 3: Cross multiply
   50,109.71x = 69,157.22 × 28,889.73
4. Step 4: Simplify right side
   50,109.71x = 1,997,933,268.90
5. Step 5: Solve for x
   x = 1,997,933,268.90/50,109.71
6. Step 6: Final answer
   x = 39,871.18