Finding the Fourth Proportional to 381,061.73, 525,908.49 and 219,960.02

Step by Step Solution

1. Step 1: Write the proportion equation
   381,061.73 : 525,908.49 = 219,960.02 : x
2. Step 2: Convert to fraction form
   381,061.73/525,908.49 = 219,960.02/x
3. Step 3: Cross multiply
   381,061.73x = 525,908.49 × 219,960.02
4. Step 4: Simplify right side
   381,061.73x = 115,678,841,978.57
5. Step 5: Solve for x
   x = 115,678,841,978.57/381,061.73
6. Step 6: Final answer
   x = 303,569.82