Finding the Fourth Proportional to 384,807.69, 531,035.33 and 215,041.82

Step by Step Solution

1. Step 1: Write the proportion equation
   384,807.69 : 531,035.33 = 215,041.82 : x
2. Step 2: Convert to fraction form
   384,807.69/531,035.33 = 215,041.82/x
3. Step 3: Cross multiply
   384,807.69x = 531,035.33 × 215,041.82
4. Step 4: Simplify right side
   384,807.69x = 114,194,801,729.93
5. Step 5: Solve for x
   x = 114,194,801,729.93/384,807.69
6. Step 6: Final answer
   x = 296,758.11