Finding the Fourth Proportional to 131,826.15, 197,870.46 and 72,689.67

Step by Step Solution

1. Step 1: Write the proportion equation
   131,826.15 : 197,870.46 = 72,689.67 : x
2. Step 2: Convert to fraction form
   131,826.15/197,870.46 = 72,689.67/x
3. Step 3: Cross multiply
   131,826.15x = 197,870.46 × 72,689.67
4. Step 4: Simplify right side
   131,826.15x = 14,383,138,440.15
5. Step 5: Solve for x
   x = 14,383,138,440.15/131,826.15
6. Step 6: Final answer
   x = 109,106.87