Finding the Fourth Proportional to 314,680.55, 434,315.32 and 185,611.10

Step by Step Solution

1. Step 1: Write the proportion equation
   314,680.55 : 434,315.32 = 185,611.10 : x
2. Step 2: Convert to fraction form
   314,680.55/434,315.32 = 185,611.10/x
3. Step 3: Cross multiply
   314,680.55x = 434,315.32 × 185,611.10
4. Step 4: Simplify right side
   314,680.55x = 80,613,741,656.45
5. Step 5: Solve for x
   x = 80,613,741,656.45/314,680.55
6. Step 6: Final answer
   x = 256,176.44