Finding the Fourth Proportional to 201,958.88, 278,701.72 and 111,315.02

Step by Step Solution

1. Step 1: Write the proportion equation
   201,958.88 : 278,701.72 = 111,315.02 : x
2. Step 2: Convert to fraction form
   201,958.88/278,701.72 = 111,315.02/x
3. Step 3: Cross multiply
   201,958.88x = 278,701.72 × 111,315.02
4. Step 4: Simplify right side
   201,958.88x = 31,023,687,954.30
5. Step 5: Solve for x
   x = 31,023,687,954.30/201,958.88
6. Step 6: Final answer
   x = 153,613.88