Finding the Fourth Proportional to 387,004.89, 534,048.69 and 214,934.01

Step by Step Solution

1. Step 1: Write the proportion equation
   387,004.89 : 534,048.69 = 214,934.01 : x
2. Step 2: Convert to fraction form
   387,004.89/534,048.69 = 214,934.01/x
3. Step 3: Cross multiply
   387,004.89x = 534,048.69 × 214,934.01
4. Step 4: Simplify right side
   387,004.89x = 114,785,225,280.27
5. Step 5: Solve for x
   x = 114,785,225,280.27/387,004.89
6. Step 6: Final answer
   x = 296,598.90