Finding the Fourth Proportional to 243,047.67, 335,355.69 and 139,661.89

Step by Step Solution

1. Step 1: Write the proportion equation
   243,047.67 : 335,355.69 = 139,661.89 : x
2. Step 2: Convert to fraction form
   243,047.67/335,355.69 = 139,661.89/x
3. Step 3: Cross multiply
   243,047.67x = 335,355.69 × 139,661.89
4. Step 4: Simplify right side
   243,047.67x = 46,836,408,160.03
5. Step 5: Solve for x
   x = 46,836,408,160.03/243,047.67
6. Step 6: Final answer
   x = 192,704.62