Finding the Fourth Proportional to 49,404.78, 74,054.07 and 21,338.10

Step by Step Solution

1. Step 1: Write the proportion equation
   49,404.78 : 74,054.07 = 21,338.10 : x
2. Step 2: Convert to fraction form
   49,404.78/74,054.07 = 21,338.10/x
3. Step 3: Cross multiply
   49,404.78x = 74,054.07 × 21,338.10
4. Step 4: Simplify right side
   49,404.78x = 1,580,173,151.07
5. Step 5: Solve for x
   x = 1,580,173,151.07/49,404.78
6. Step 6: Final answer
   x = 31,984.22