Finding the Fourth Proportional to 201,818.63, 278,531.59 and 111,183.88

Step by Step Solution

1. Step 1: Write the proportion equation
   201,818.63 : 278,531.59 = 111,183.88 : x
2. Step 2: Convert to fraction form
   201,818.63/278,531.59 = 111,183.88/x
3. Step 3: Cross multiply
   201,818.63x = 278,531.59 × 111,183.88
4. Step 4: Simplify right side
   201,818.63x = 30,968,222,322.85
5. Step 5: Solve for x
   x = 30,968,222,322.85/201,818.63
6. Step 6: Final answer
   x = 153,445.81