Finding the Fourth Proportional to 272,259.10, 408,097.05 and 103,714.30

Step by Step Solution

1. Step 1: Write the proportion equation
   272,259.10 : 408,097.05 = 103,714.30 : x
2. Step 2: Convert to fraction form
   272,259.10/408,097.05 = 103,714.30/x
3. Step 3: Cross multiply
   272,259.10x = 408,097.05 × 103,714.30
4. Step 4: Simplify right side
   272,259.10x = 42,325,499,872.82
5. Step 5: Solve for x
   x = 42,325,499,872.82/272,259.10
6. Step 6: Final answer
   x = 155,460.37