Finding the Fourth Proportional to 281,105.16, 421,714.17 and 103,613.10

Step by Step Solution

1. Step 1: Write the proportion equation
   281,105.16 : 421,714.17 = 103,613.10 : x
2. Step 2: Convert to fraction form
   281,105.16/421,714.17 = 103,613.10/x
3. Step 3: Cross multiply
   281,105.16x = 421,714.17 × 103,613.10
4. Step 4: Simplify right side
   281,105.16x = 43,695,112,467.63
5. Step 5: Solve for x
   x = 43,695,112,467.63/281,105.16
6. Step 6: Final answer
   x = 155,440.45