Finding the Fourth Proportional to 418,139.42, 577,037.32 and 227,155.82

Step by Step Solution

1. Step 1: Write the proportion equation
   418,139.42 : 577,037.32 = 227,155.82 : x
2. Step 2: Convert to fraction form
   418,139.42/577,037.32 = 227,155.82/x
3. Step 3: Cross multiply
   418,139.42x = 577,037.32 × 227,155.82
4. Step 4: Simplify right side
   418,139.42x = 131,077,385,595.20
5. Step 5: Solve for x
   x = 131,077,385,595.20/418,139.42
6. Step 6: Final answer
   x = 313,477.70