Finding the Fourth Proportional to 202,061.27, 278,842.33 and 111,425.20

Step by Step Solution

1. Step 1: Write the proportion equation
   202,061.27 : 278,842.33 = 111,425.20 : x
2. Step 2: Convert to fraction form
   202,061.27/278,842.33 = 111,425.20/x
3. Step 3: Cross multiply
   202,061.27x = 278,842.33 × 111,425.20
4. Step 4: Simplify right side
   202,061.27x = 31,070,062,388.72
5. Step 5: Solve for x
   x = 31,070,062,388.72/202,061.27
6. Step 6: Final answer
   x = 153,765.55