Finding the Fourth Proportional to 418,910.57, 578,079.32 and 227,924.72

Step by Step Solution

1. Step 1: Write the proportion equation
   418,910.57 : 578,079.32 = 227,924.72 : x
2. Step 2: Convert to fraction form
   418,910.57/578,079.32 = 227,924.72/x
3. Step 3: Cross multiply
   418,910.57x = 578,079.32 × 227,924.72
4. Step 4: Simplify right side
   418,910.57x = 131,758,566,009.17
5. Step 5: Solve for x
   x = 131,758,566,009.17/418,910.57
6. Step 6: Final answer
   x = 314,526.72