Finding the Fourth Proportional to 224,574, 309,912.72 and 123,972

Step by Step Solution

1. Step 1: Write the proportion equation
   224,574 : 309,912.72 = 123,972 : x
2. Step 2: Convert to fraction form
   224,574/309,912.72 = 123,972/x
3. Step 3: Cross multiply
   224,574x = 309,912.72 × 123,972
4. Step 4: Simplify right side
   224,574x = 38,420,499,723.84
5. Step 5: Solve for x
   x = 38,420,499,723.84/224,574
6. Step 6: Final answer
   x = 171,081.69