Finding the Fourth Proportional to 200,624, 276,861.60 and 111,200

Step by Step Solution

1. Step 1: Write the proportion equation
   200,624 : 276,861.60 = 111,200 : x
2. Step 2: Convert to fraction form
   200,624/276,861.60 = 111,200/x
3. Step 3: Cross multiply
   200,624x = 276,861.60 × 111,200
4. Step 4: Simplify right side
   200,624x = 30,787,009,920.00
5. Step 5: Solve for x
   x = 30,787,009,920.00/200,624
6. Step 6: Final answer
   x = 153,456.27