Finding the Fourth Proportional to 199,641.32, 275,503.61 and 108,997.28

Step by Step Solution

1. Step 1: Write the proportion equation
   199,641.32 : 275,503.61 = 108,997.28 : x
2. Step 2: Convert to fraction form
   199,641.32/275,503.61 = 108,997.28/x
3. Step 3: Cross multiply
   199,641.32x = 275,503.61 × 108,997.28
4. Step 4: Simplify right side
   199,641.32x = 30,029,145,081.43
5. Step 5: Solve for x
   x = 30,029,145,081.43/199,641.32
6. Step 6: Final answer
   x = 150,415.48