Finding the Fourth Proportional to 199,623.69, 275,480.04 and 108,980.77

Step by Step Solution

1. Step 1: Write the proportion equation
   199,623.69 : 275,480.04 = 108,980.77 : x
2. Step 2: Convert to fraction form
   199,623.69/275,480.04 = 108,980.77/x
3. Step 3: Cross multiply
   199,623.69x = 275,480.04 × 108,980.77
4. Step 4: Simplify right side
   199,623.69x = 30,022,026,878.83
5. Step 5: Solve for x
   x = 30,022,026,878.83/199,623.69
6. Step 6: Final answer
   x = 150,393.11