Finding the Fourth Proportional to 252,592.69, 348,553.10 and 139,408.15

Step by Step Solution

1. Step 1: Write the proportion equation
   252,592.69 : 348,553.10 = 139,408.15 : x
2. Step 2: Convert to fraction form
   252,592.69/348,553.10 = 139,408.15/x
3. Step 3: Cross multiply
   252,592.69x = 348,553.10 × 139,408.15
4. Step 4: Simplify right side
   252,592.69x = 48,591,142,150.72
5. Step 5: Solve for x
   x = 48,591,142,150.72/252,592.69
6. Step 6: Final answer
   x = 192,369.55