Finding the Fourth Proportional to 382,290.72, 527,574.72 and 210,221.84

Step by Step Solution

1. Step 1: Write the proportion equation
   382,290.72 : 527,574.72 = 210,221.84 : x
2. Step 2: Convert to fraction form
   382,290.72/527,574.72 = 210,221.84/x
3. Step 3: Cross multiply
   382,290.72x = 527,574.72 × 210,221.84
4. Step 4: Simplify right side
   382,290.72x = 110,907,728,375.89
5. Step 5: Solve for x
   x = 110,907,728,375.89/382,290.72
6. Step 6: Final answer
   x = 290,113.58