Finding the Fourth Proportional to 277,870.56, 416,304.72 and 171,068.64

Step by Step Solution

1. Step 1: Write the proportion equation
   277,870.56 : 416,304.72 = 171,068.64 : x
2. Step 2: Convert to fraction form
   277,870.56/416,304.72 = 171,068.64/x
3. Step 3: Cross multiply
   277,870.56x = 416,304.72 × 171,068.64
4. Step 4: Simplify right side
   277,870.56x = 71,216,682,275.98
5. Step 5: Solve for x
   x = 71,216,682,275.98/277,870.56
6. Step 6: Final answer
   x = 256,294.45