Finding the Fourth Proportional to 378,105.42, 521,781.30 and 214,760.82

Step by Step Solution

1. Step 1: Write the proportion equation
   378,105.42 : 521,781.30 = 214,760.82 : x
2. Step 2: Convert to fraction form
   378,105.42/521,781.30 = 214,760.82/x
3. Step 3: Cross multiply
   378,105.42x = 521,781.30 × 214,760.82
4. Step 4: Simplify right side
   378,105.42x = 112,058,179,848.67
5. Step 5: Solve for x
   x = 112,058,179,848.67/378,105.42
6. Step 6: Final answer
   x = 296,367.56