Finding the Fourth Proportional to 387,018.02, 534,086.18 and 214,936.43

Step by Step Solution

1. Step 1: Write the proportion equation
   387,018.02 : 534,086.18 = 214,936.43 : x
2. Step 2: Convert to fraction form
   387,018.02/534,086.18 = 214,936.43/x
3. Step 3: Cross multiply
   387,018.02x = 534,086.18 × 214,936.43
4. Step 4: Simplify right side
   387,018.02x = 114,794,573,096.42
5. Step 5: Solve for x
   x = 114,794,573,096.42/387,018.02
6. Step 6: Final answer
   x = 296,613.00