Finding the Fourth Proportional to 223,990.27, 309,106.61 and 123,388.27

Step by Step Solution

1. Step 1: Write the proportion equation
   223,990.27 : 309,106.61 = 123,388.27 : x
2. Step 2: Convert to fraction form
   223,990.27/309,106.61 = 123,388.27/x
3. Step 3: Cross multiply
   223,990.27x = 309,106.61 × 123,388.27
4. Step 4: Simplify right side
   223,990.27x = 38,140,129,853.46
5. Step 5: Solve for x
   x = 38,140,129,853.46/223,990.27
6. Step 6: Final answer
   x = 170,275.83