Finding the Fourth Proportional to 190,243.55, 261,938.61 and 161,503.67

Step by Step Solution

1. Step 1: Write the proportion equation
   190,243.55 : 261,938.61 = 161,503.67 : x
2. Step 2: Convert to fraction form
   190,243.55/261,938.61 = 161,503.67/x
3. Step 3: Cross multiply
   190,243.55x = 261,938.61 × 161,503.67
4. Step 4: Simplify right side
   190,243.55x = 42,304,047,484.55
5. Step 5: Solve for x
   x = 42,304,047,484.55/190,243.55
6. Step 6: Final answer
   x = 222,367.84