Finding the Fourth Proportional to 309,100.86, 426,501.45 and 181,729.98

Step by Step Solution

1. Step 1: Write the proportion equation
   309,100.86 : 426,501.45 = 181,729.98 : x
2. Step 2: Convert to fraction form
   309,100.86/426,501.45 = 181,729.98/x
3. Step 3: Cross multiply
   309,100.86x = 426,501.45 × 181,729.98
4. Step 4: Simplify right side
   309,100.86x = 77,508,099,978.47
5. Step 5: Solve for x
   x = 77,508,099,978.47/309,100.86
6. Step 6: Final answer
   x = 250,753.43