Finding the Fourth Proportional to 381,608.72, 572,675.52 and 132,290.72

Step by Step Solution

1. Step 1: Write the proportion equation
   381,608.72 : 572,675.52 = 132,290.72 : x
2. Step 2: Convert to fraction form
   381,608.72/572,675.52 = 132,290.72/x
3. Step 3: Cross multiply
   381,608.72x = 572,675.52 × 132,290.72
4. Step 4: Simplify right side
   381,608.72x = 75,759,655,903.28
5. Step 5: Solve for x
   x = 75,759,655,903.28/381,608.72
6. Step 6: Final answer
   x = 198,527.06