Finding the Fourth Proportional to 213,870.72, 320,849.28 and 73,634.88

Step by Step Solution

1. Step 1: Write the proportion equation
   213,870.72 : 320,849.28 = 73,634.88 : x
2. Step 2: Convert to fraction form
   213,870.72/320,849.28 = 73,634.88/x
3. Step 3: Cross multiply
   213,870.72x = 320,849.28 × 73,634.88
4. Step 4: Simplify right side
   213,870.72x = 23,625,698,230.89
5. Step 5: Solve for x
   x = 23,625,698,230.89/213,870.72
6. Step 6: Final answer
   x = 110,467.19