Finding the Fourth Proportional to 315,762.34, 435,746.88 and 172,519.30

Step by Step Solution

1. Step 1: Write the proportion equation
   315,762.34 : 435,746.88 = 172,519.30 : x
2. Step 2: Convert to fraction form
   315,762.34/435,746.88 = 172,519.30/x
3. Step 3: Cross multiply
   315,762.34x = 435,746.88 × 172,519.30
4. Step 4: Simplify right side
   315,762.34x = 75,174,746,714.78
5. Step 5: Solve for x
   x = 75,174,746,714.78/315,762.34
6. Step 6: Final answer
   x = 238,073.82