Finding the Fourth Proportional to 375,624.69, 518,304.73 and 212,221.57

Step by Step Solution

1. Step 1: Write the proportion equation
   375,624.69 : 518,304.73 = 212,221.57 : x
2. Step 2: Convert to fraction form
   375,624.69/518,304.73 = 212,221.57/x
3. Step 3: Cross multiply
   375,624.69x = 518,304.73 × 212,221.57
4. Step 4: Simplify right side
   375,624.69x = 109,995,444,054.27
5. Step 5: Solve for x
   x = 109,995,444,054.27/375,624.69
6. Step 6: Final answer
   x = 292,833.37