Finding the Fourth Proportional to 314,738.64, 434,339.40 and 171,498.72

Step by Step Solution

1. Step 1: Write the proportion equation
   314,738.64 : 434,339.40 = 171,498.72 : x
2. Step 2: Convert to fraction form
   314,738.64/434,339.40 = 171,498.72/x
3. Step 3: Cross multiply
   314,738.64x = 434,339.40 × 171,498.72
4. Step 4: Simplify right side
   314,738.64x = 74,488,651,145.57
5. Step 5: Solve for x
   x = 74,488,651,145.57/314,738.64
6. Step 6: Final answer
   x = 236,668.28