Finding the Fourth Proportional to 154,745.46, 213,549.89 and 100,998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   154,745.46 : 213,549.89 = 100,998.72 : x
2. Step 2: Convert to fraction form
   154,745.46/213,549.89 = 100,998.72/x
3. Step 3: Cross multiply
   154,745.46x = 213,549.89 × 100,998.72
4. Step 4: Simplify right side
   154,745.46x = 21,568,265,041.15
5. Step 5: Solve for x
   x = 21,568,265,041.15/154,745.46
6. Step 6: Final answer
   x = 139,378.98