Finding the Fourth Proportional to 201,308.84, 301,721.34 and 142,055.72

Step by Step Solution

1. Step 1: Write the proportion equation
   201,308.84 : 301,721.34 = 142,055.72 : x
2. Step 2: Convert to fraction form
   201,308.84/301,721.34 = 142,055.72/x
3. Step 3: Cross multiply
   201,308.84x = 301,721.34 × 142,055.72
4. Step 4: Simplify right side
   201,308.84x = 42,861,242,193.06
5. Step 5: Solve for x
   x = 42,861,242,193.06/201,308.84
6. Step 6: Final answer
   x = 212,912.87