Finding the Fourth Proportional to 200,196.42, 300,085.50 and 66,967.12

Step by Step Solution

1. Step 1: Write the proportion equation
   200,196.42 : 300,085.50 = 66,967.12 : x
2. Step 2: Convert to fraction form
   200,196.42/300,085.50 = 66,967.12/x
3. Step 3: Cross multiply
   200,196.42x = 300,085.50 × 66,967.12
4. Step 4: Simplify right side
   200,196.42x = 20,095,861,688.76
5. Step 5: Solve for x
   x = 20,095,861,688.76/200,196.42
6. Step 6: Final answer
   x = 100,380.72