Finding the Fourth Proportional to 200,480, 276,662.40 and 111,056

Step by Step Solution

1. Step 1: Write the proportion equation
   200,480 : 276,662.40 = 111,056 : x
2. Step 2: Convert to fraction form
   200,480/276,662.40 = 111,056/x
3. Step 3: Cross multiply
   200,480x = 276,662.40 × 111,056
4. Step 4: Simplify right side
   200,480x = 30,725,019,494.40
5. Step 5: Solve for x
   x = 30,725,019,494.40/200,480
6. Step 6: Final answer
   x = 153,257.28