Finding the Fourth Proportional to 49,984.56, 68,978.76 and 28,763.40

Step by Step Solution

1. Step 1: Write the proportion equation
   49,984.56 : 68,978.76 = 28,763.40 : x
2. Step 2: Convert to fraction form
   49,984.56/68,978.76 = 28,763.40/x
3. Step 3: Cross multiply
   49,984.56x = 68,978.76 × 28,763.40
4. Step 4: Simplify right side
   49,984.56x = 1,984,063,665.38
5. Step 5: Solve for x
   x = 1,984,063,665.38/49,984.56
6. Step 6: Final answer
   x = 39,693.53