Finding the Fourth Proportional to 315,517.32, 435,411.72 and 172,277.28

Step by Step Solution

1. Step 1: Write the proportion equation
   315,517.32 : 435,411.72 = 172,277.28 : x
2. Step 2: Convert to fraction form
   315,517.32/435,411.72 = 172,277.28/x
3. Step 3: Cross multiply
   315,517.32x = 435,411.72 × 172,277.28
4. Step 4: Simplify right side
   315,517.32x = 75,011,546,801.72
5. Step 5: Solve for x
   x = 75,011,546,801.72/315,517.32
6. Step 6: Final answer
   x = 237,741.46