Finding the Fourth Proportional to 50,120.81, 69,164.89 and 28,611.66

Step by Step Solution

1. Step 1: Write the proportion equation
   50,120.81 : 69,164.89 = 28,611.66 : x
2. Step 2: Convert to fraction form
   50,120.81/69,164.89 = 28,611.66/x
3. Step 3: Cross multiply
   50,120.81x = 69,164.89 × 28,611.66
4. Step 4: Simplify right side
   50,120.81x = 1,978,922,504.46
5. Step 5: Solve for x
   x = 1,978,922,504.46/50,120.81
6. Step 6: Final answer
   x = 39,483.05