Finding the Fourth Proportional to 210,928.78, 290,947.35 and 147,243.34

Step by Step Solution

1. Step 1: Write the proportion equation
   210,928.78 : 290,947.35 = 147,243.34 : x
2. Step 2: Convert to fraction form
   210,928.78/290,947.35 = 147,243.34/x
3. Step 3: Cross multiply
   210,928.78x = 290,947.35 × 147,243.34
4. Step 4: Simplify right side
   210,928.78x = 42,840,059,578.15
5. Step 5: Solve for x
   x = 42,840,059,578.15/210,928.78
6. Step 6: Final answer
   x = 203,102.01