Finding the Fourth Proportional to 202,016.58, 278,784.78 and 111,375.72

Step by Step Solution

1. Step 1: Write the proportion equation
   202,016.58 : 278,784.78 = 111,375.72 : x
2. Step 2: Convert to fraction form
   202,016.58/278,784.78 = 111,375.72/x
3. Step 3: Cross multiply
   202,016.58x = 278,784.78 × 111,375.72
4. Step 4: Simplify right side
   202,016.58x = 31,049,855,597.54
5. Step 5: Solve for x
   x = 31,049,855,597.54/202,016.58
6. Step 6: Final answer
   x = 153,699.54