Finding the Fourth Proportional to 201,697.59, 278,340.38 and 111,051.71

Step by Step Solution

1. Step 1: Write the proportion equation
   201,697.59 : 278,340.38 = 111,051.71 : x
2. Step 2: Convert to fraction form
   201,697.59/278,340.38 = 111,051.71/x
3. Step 3: Cross multiply
   201,697.59x = 278,340.38 × 111,051.71
4. Step 4: Simplify right side
   201,697.59x = 30,910,173,769.35
5. Step 5: Solve for x
   x = 30,910,173,769.35/201,697.59
6. Step 6: Final answer
   x = 153,250.09