Finding the Fourth Proportional to 139,648.00, 209,472.38 and 38,447.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,648.00 : 209,472.38 = 38,447.38 : x
2. Step 2: Convert to fraction form
   139,648.00/209,472.38 = 38,447.38/x
3. Step 3: Cross multiply
   139,648.00x = 209,472.38 × 38,447.38
4. Step 4: Simplify right side
   139,648.00x = 8,053,664,996.29
5. Step 5: Solve for x
   x = 8,053,664,996.29/139,648.00
6. Step 6: Final answer
   x = 57,671.18