Finding the Fourth Proportional to 201,707.18, 278,353.56 and 111,061.22

Step by Step Solution

1. Step 1: Write the proportion equation
   201,707.18 : 278,353.56 = 111,061.22 : x
2. Step 2: Convert to fraction form
   201,707.18/278,353.56 = 111,061.22/x
3. Step 3: Cross multiply
   201,707.18x = 278,353.56 × 111,061.22
4. Step 4: Simplify right side
   201,707.18x = 30,914,285,964.94
5. Step 5: Solve for x
   x = 30,914,285,964.94/201,707.18
6. Step 6: Final answer
   x = 153,263.19