Finding the Fourth Proportional to 49,971.89, 74,978.60 and 21,877.49

Step by Step Solution

1. Step 1: Write the proportion equation
   49,971.89 : 74,978.60 = 21,877.49 : x
2. Step 2: Convert to fraction form
   49,971.89/74,978.60 = 21,877.49/x
3. Step 3: Cross multiply
   49,971.89x = 74,978.60 × 21,877.49
4. Step 4: Simplify right side
   49,971.89x = 1,640,343,087.43
5. Step 5: Solve for x
   x = 1,640,343,087.43/49,971.89
6. Step 6: Final answer
   x = 32,825.32