Finding the Fourth Proportional to 271,620.72, 407,452.86 and 103,221.72

Step by Step Solution

1. Step 1: Write the proportion equation
   271,620.72 : 407,452.86 = 103,221.72 : x
2. Step 2: Convert to fraction form
   271,620.72/407,452.86 = 103,221.72/x
3. Step 3: Cross multiply
   271,620.72x = 407,452.86 × 103,221.72
4. Step 4: Simplify right side
   271,620.72x = 42,057,985,028.12
5. Step 5: Solve for x
   x = 42,057,985,028.12/271,620.72
6. Step 6: Final answer
   x = 154,840.86