Finding the Fourth Proportional to 138,828.27, 208,240.56 and 33,648.15

Step by Step Solution

1. Step 1: Write the proportion equation
   138,828.27 : 208,240.56 = 33,648.15 : x
2. Step 2: Convert to fraction form
   138,828.27/208,240.56 = 33,648.15/x
3. Step 3: Cross multiply
   138,828.27x = 208,240.56 × 33,648.15
4. Step 4: Simplify right side
   138,828.27x = 7,006,909,598.96
5. Step 5: Solve for x
   x = 7,006,909,598.96/138,828.27
6. Step 6: Final answer
   x = 50,471.78