Finding the Fourth Proportional to 200,627.76, 300,991.84 and 141,578.72

Step by Step Solution

1. Step 1: Write the proportion equation
   200,627.76 : 300,991.84 = 141,578.72 : x
2. Step 2: Convert to fraction form
   200,627.76/300,991.84 = 141,578.72/x
3. Step 3: Cross multiply
   200,627.76x = 300,991.84 × 141,578.72
4. Step 4: Simplify right side
   200,627.76x = 42,614,039,437.64
5. Step 5: Solve for x
   x = 42,614,039,437.64/200,627.76
6. Step 6: Final answer
   x = 212,403.51