Finding the Fourth Proportional to 319,066.72, 478,310.41 and 159,191.55

Step by Step Solution

1. Step 1: Write the proportion equation
   319,066.72 : 478,310.41 = 159,191.55 : x
2. Step 2: Convert to fraction form
   319,066.72/478,310.41 = 159,191.55/x
3. Step 3: Cross multiply
   319,066.72x = 478,310.41 × 159,191.55
4. Step 4: Simplify right side
   319,066.72x = 76,142,975,549.04
5. Step 5: Solve for x
   x = 76,142,975,549.04/319,066.72
6. Step 6: Final answer
   x = 238,642.80