Finding the Fourth Proportional to 221,086.69, 305,099.93 and 120,484.69

Step by Step Solution

1. Step 1: Write the proportion equation
   221,086.69 : 305,099.93 = 120,484.69 : x
2. Step 2: Convert to fraction form
   221,086.69/305,099.93 = 120,484.69/x
3. Step 3: Cross multiply
   221,086.69x = 305,099.93 × 120,484.69
4. Step 4: Simplify right side
   221,086.69x = 36,759,870,023.53
5. Step 5: Solve for x
   x = 36,759,870,023.53/221,086.69
6. Step 6: Final answer
   x = 166,269.03