Finding the Fourth Proportional to 50,061.28, 69,109.50 and 28,836.40

Step by Step Solution

1. Step 1: Write the proportion equation
   50,061.28 : 69,109.50 = 28,836.40 : x
2. Step 2: Convert to fraction form
   50,061.28/69,109.50 = 28,836.40/x
3. Step 3: Cross multiply
   50,061.28x = 69,109.50 × 28,836.40
4. Step 4: Simplify right side
   50,061.28x = 1,992,869,185.80
5. Step 5: Solve for x
   x = 1,992,869,185.80/50,061.28
6. Step 6: Final answer
   x = 39,808.59