Finding the Fourth Proportional to 238,991.43, 358,404.51 and 105,964.72

Step by Step Solution

1. Step 1: Write the proportion equation
   238,991.43 : 358,404.51 = 105,964.72 : x
2. Step 2: Convert to fraction form
   238,991.43/358,404.51 = 105,964.72/x
3. Step 3: Cross multiply
   238,991.43x = 358,404.51 × 105,964.72
4. Step 4: Simplify right side
   238,991.43x = 37,978,233,548.89
5. Step 5: Solve for x
   x = 37,978,233,548.89/238,991.43
6. Step 6: Final answer
   x = 158,910.44