Finding the Fourth Proportional to 380,443.82, 525,028.96 and 210,677.94

Step by Step Solution

1. Step 1: Write the proportion equation
   380,443.82 : 525,028.96 = 210,677.94 : x
2. Step 2: Convert to fraction form
   380,443.82/525,028.96 = 210,677.94/x
3. Step 3: Cross multiply
   380,443.82x = 525,028.96 × 210,677.94
4. Step 4: Simplify right side
   380,443.82x = 110,612,019,733.14
5. Step 5: Solve for x
   x = 110,612,019,733.14/380,443.82
6. Step 6: Final answer
   x = 290,744.69