Finding the Fourth Proportional to 381,064.80, 525,868.56 and 211,294.56

Step by Step Solution

1. Step 1: Write the proportion equation
   381,064.80 : 525,868.56 = 211,294.56 : x
2. Step 2: Convert to fraction form
   381,064.80/525,868.56 = 211,294.56/x
3. Step 3: Cross multiply
   381,064.80x = 525,868.56 × 211,294.56
4. Step 4: Simplify right side
   381,064.80x = 111,113,166,003.03
5. Step 5: Solve for x
   x = 111,113,166,003.03/381,064.80
6. Step 6: Final answer
   x = 291,586.01