Finding the Fourth Proportional to 309,105.72, 463,539.48 and 109,388.88

Step by Step Solution

1. Step 1: Write the proportion equation
   309,105.72 : 463,539.48 = 109,388.88 : x
2. Step 2: Convert to fraction form
   309,105.72/463,539.48 = 109,388.88/x
3. Step 3: Cross multiply
   309,105.72x = 463,539.48 × 109,388.88
4. Step 4: Simplify right side
   309,105.72x = 50,706,064,552.98
5. Step 5: Solve for x
   x = 50,706,064,552.98/309,105.72
6. Step 6: Final answer
   x = 164,041.17