Finding the Fourth Proportional to 221,100.54, 305,118.81 and 120,498.54

Step by Step Solution

1. Step 1: Write the proportion equation
   221,100.54 : 305,118.81 = 120,498.54 : x
2. Step 2: Convert to fraction form
   221,100.54/305,118.81 = 120,498.54/x
3. Step 3: Cross multiply
   221,100.54x = 305,118.81 × 120,498.54
4. Step 4: Simplify right side
   221,100.54x = 36,766,371,131.54
5. Step 5: Solve for x
   x = 36,766,371,131.54/221,100.54
6. Step 6: Final answer
   x = 166,288.02