Finding the Fourth Proportional to 213,429.33, 320,143.86 and 63,774.61

Step by Step Solution

1. Step 1: Write the proportion equation
   213,429.33 : 320,143.86 = 63,774.61 : x
2. Step 2: Convert to fraction form
   213,429.33/320,143.86 = 63,774.61/x
3. Step 3: Cross multiply
   213,429.33x = 320,143.86 × 63,774.61
4. Step 4: Simplify right side
   213,429.33x = 20,417,049,015.04
5. Step 5: Solve for x
   x = 20,417,049,015.04/213,429.33
6. Step 6: Final answer
   x = 95,661.87