Finding the Fourth Proportional to 49,978, 68,969.72 and 27,622

Step by Step Solution

1. Step 1: Write the proportion equation
   49,978 : 68,969.72 = 27,622 : x
2. Step 2: Convert to fraction form
   49,978/68,969.72 = 27,622/x
3. Step 3: Cross multiply
   49,978x = 68,969.72 × 27,622
4. Step 4: Simplify right side
   49,978x = 1,905,081,605.84
5. Step 5: Solve for x
   x = 1,905,081,605.84/49,978
6. Step 6: Final answer
   x = 38,118.40