Finding the Fourth Proportional to 105,364.50, 157,964.58 and 71,541.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,364.50 : 157,964.58 = 71,541.33 : x
2. Step 2: Convert to fraction form
   105,364.50/157,964.58 = 71,541.33/x
3. Step 3: Cross multiply
   105,364.50x = 157,964.58 × 71,541.33
4. Step 4: Simplify right side
   105,364.50x = 11,300,995,553.72
5. Step 5: Solve for x
   x = 11,300,995,553.72/105,364.50
6. Step 6: Final answer
   x = 107,256.20