Finding the Fourth Proportional to 50,800.74, 70,104.93 and 28,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,800.74 : 70,104.93 = 28,139.72 : x
2. Step 2: Convert to fraction form
   50,800.74/70,104.93 = 28,139.72/x
3. Step 3: Cross multiply
   50,800.74x = 70,104.93 × 28,139.72
4. Step 4: Simplify right side
   50,800.74x = 1,972,733,100.82
5. Step 5: Solve for x
   x = 1,972,733,100.82/50,800.74
6. Step 6: Final answer
   x = 38,832.76