Finding the Fourth Proportional to 30,683.08, 42,341.92 and 20,072.49

Step by Step Solution

1. Step 1: Write the proportion equation
   30,683.08 : 42,341.92 = 20,072.49 : x
2. Step 2: Convert to fraction form
   30,683.08/42,341.92 = 20,072.49/x
3. Step 3: Cross multiply
   30,683.08x = 42,341.92 × 20,072.49
4. Step 4: Simplify right side
   30,683.08x = 849,907,556.82
5. Step 5: Solve for x
   x = 849,907,556.82/30,683.08
6. Step 6: Final answer
   x = 27,699.55