Finding the Fourth Proportional to 139,342.02, 209,009.39 and 49,383.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,342.02 : 209,009.39 = 49,383.42 : x
2. Step 2: Convert to fraction form
   139,342.02/209,009.39 = 49,383.42/x
3. Step 3: Cross multiply
   139,342.02x = 209,009.39 × 49,383.42
4. Step 4: Simplify right side
   139,342.02x = 10,321,598,243.40
5. Step 5: Solve for x
   x = 10,321,598,243.40/139,342.02
6. Step 6: Final answer
   x = 74,073.84