Finding the Fourth Proportional to 201,992.22, 278,736.72 and 111,343.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,992.22 : 278,736.72 = 111,343.50 : x
2. Step 2: Convert to fraction form
   201,992.22/278,736.72 = 111,343.50/x
3. Step 3: Cross multiply
   201,992.22x = 278,736.72 × 111,343.50
4. Step 4: Simplify right side
   201,992.22x = 31,035,521,983.32
5. Step 5: Solve for x
   x = 31,035,521,983.32/201,992.22
6. Step 6: Final answer
   x = 153,647.12