Finding the Fourth Proportional to 319,055.69, 478,464.38 and 105,784.49

Step by Step Solution

1. Step 1: Write the proportion equation
   319,055.69 : 478,464.38 = 105,784.49 : x
2. Step 2: Convert to fraction form
   319,055.69/478,464.38 = 105,784.49/x
3. Step 3: Cross multiply
   319,055.69x = 478,464.38 × 105,784.49
4. Step 4: Simplify right side
   319,055.69x = 50,614,109,892.54
5. Step 5: Solve for x
   x = 50,614,109,892.54/319,055.69
6. Step 6: Final answer
   x = 158,637.23