Finding the Fourth Proportional to 202,020.96, 278,775.81 and 111,377.69

Step by Step Solution

1. Step 1: Write the proportion equation
   202,020.96 : 278,775.81 = 111,377.69 : x
2. Step 2: Convert to fraction form
   202,020.96/278,775.81 = 111,377.69/x
3. Step 3: Cross multiply
   202,020.96x = 278,775.81 × 111,377.69
4. Step 4: Simplify right side
   202,020.96x = 31,049,404,351.80
5. Step 5: Solve for x
   x = 31,049,404,351.80/202,020.96
6. Step 6: Final answer
   x = 153,693.97