Finding the Fourth Proportional to 49,116.10, 73,612.51 and 21,003.09

Step by Step Solution

1. Step 1: Write the proportion equation
   49,116.10 : 73,612.51 = 21,003.09 : x
2. Step 2: Convert to fraction form
   49,116.10/73,612.51 = 21,003.09/x
3. Step 3: Cross multiply
   49,116.10x = 73,612.51 × 21,003.09
4. Step 4: Simplify right side
   49,116.10x = 1,546,090,172.66
5. Step 5: Solve for x
   x = 1,546,090,172.66/49,116.10
6. Step 6: Final answer
   x = 31,478.28