Finding the Fourth Proportional to 49,802.54, 68,700.78 and 31,878.26

Step by Step Solution

1. Step 1: Write the proportion equation
   49,802.54 : 68,700.78 = 31,878.26 : x
2. Step 2: Convert to fraction form
   49,802.54/68,700.78 = 31,878.26/x
3. Step 3: Cross multiply
   49,802.54x = 68,700.78 × 31,878.26
4. Step 4: Simplify right side
   49,802.54x = 2,190,061,327.04
5. Step 5: Solve for x
   x = 2,190,061,327.04/49,802.54
6. Step 6: Final answer
   x = 43,974.89