Finding the Fourth Proportional to 50,005.62, 69,005.52 and 28,780.38

Step by Step Solution

1. Step 1: Write the proportion equation
   50,005.62 : 69,005.52 = 28,780.38 : x
2. Step 2: Convert to fraction form
   50,005.62/69,005.52 = 28,780.38/x
3. Step 3: Cross multiply
   50,005.62x = 69,005.52 × 28,780.38
4. Step 4: Simplify right side
   50,005.62x = 1,986,005,087.70
5. Step 5: Solve for x
   x = 1,986,005,087.70/50,005.62
6. Step 6: Final answer
   x = 39,715.64