Finding the Fourth Proportional to 201,971.82, 278,727.01 and 111,328.87

Step by Step Solution

1. Step 1: Write the proportion equation
   201,971.82 : 278,727.01 = 111,328.87 : x
2. Step 2: Convert to fraction form
   201,971.82/278,727.01 = 111,328.87/x
3. Step 3: Cross multiply
   201,971.82x = 278,727.01 × 111,328.87
4. Step 4: Simplify right side
   201,971.82x = 31,030,363,061.78
5. Step 5: Solve for x
   x = 31,030,363,061.78/201,971.82
6. Step 6: Final answer
   x = 153,637.09