Finding the Fourth Proportional to 247,399.86, 341,411.85 and 139,967.67

Step by Step Solution

1. Step 1: Write the proportion equation
   247,399.86 : 341,411.85 = 139,967.67 : x
2. Step 2: Convert to fraction form
   247,399.86/341,411.85 = 139,967.67/x
3. Step 3: Cross multiply
   247,399.86x = 341,411.85 × 139,967.67
4. Step 4: Simplify right side
   247,399.86x = 47,786,621,154.89
5. Step 5: Solve for x
   x = 47,786,621,154.89/247,399.86
6. Step 6: Final answer
   x = 193,155.41