Finding the Fourth Proportional to 200,729.16, 301,144.34 and 141,680.16

Step by Step Solution

1. Step 1: Write the proportion equation
   200,729.16 : 301,144.34 = 141,680.16 : x
2. Step 2: Convert to fraction form
   200,729.16/301,144.34 = 141,680.16/x
3. Step 3: Cross multiply
   200,729.16x = 301,144.34 × 141,680.16
4. Step 4: Simplify right side
   200,729.16x = 42,666,177,565.89
5. Step 5: Solve for x
   x = 42,666,177,565.89/200,729.16
6. Step 6: Final answer
   x = 212,555.95