Finding the Fourth Proportional to 671,148.72, 926,185.37 and 369,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   671,148.72 : 926,185.37 = 369,342.72 : x
2. Step 2: Convert to fraction form
   671,148.72/926,185.37 = 369,342.72/x
3. Step 3: Cross multiply
   671,148.72x = 926,185.37 × 369,342.72
4. Step 4: Simplify right side
   671,148.72x = 342,079,824,010.85
5. Step 5: Solve for x
   x = 342,079,824,010.85/671,148.72
6. Step 6: Final answer
   x = 509,693.03