Finding the Fourth Proportional to 50,139.97, 69,178.32 and 28,629

Step by Step Solution

1. Step 1: Write the proportion equation
   50,139.97 : 69,178.32 = 28,629 : x
2. Step 2: Convert to fraction form
   50,139.97/69,178.32 = 28,629/x
3. Step 3: Cross multiply
   50,139.97x = 69,178.32 × 28,629
4. Step 4: Simplify right side
   50,139.97x = 1,980,506,123.28
5. Step 5: Solve for x
   x = 1,980,506,123.28/50,139.97
6. Step 6: Final answer
   x = 39,499.55