Finding the Fourth Proportional to 384,875.69, 531,119.27 and 215,125.61

Step by Step Solution

1. Step 1: Write the proportion equation
   384,875.69 : 531,119.27 = 215,125.61 : x
2. Step 2: Convert to fraction form
   384,875.69/531,119.27 = 215,125.61/x
3. Step 3: Cross multiply
   384,875.69x = 531,119.27 × 215,125.61
4. Step 4: Simplify right side
   384,875.69x = 114,257,354,823.72
5. Step 5: Solve for x
   x = 114,257,354,823.72/384,875.69
6. Step 6: Final answer
   x = 296,868.21