Finding the Fourth Proportional to 105,851.40, 158,546.70 and 64,225.80

Step by Step Solution

1. Step 1: Write the proportion equation
   105,851.40 : 158,546.70 = 64,225.80 : x
2. Step 2: Convert to fraction form
   105,851.40/158,546.70 = 64,225.80/x
3. Step 3: Cross multiply
   105,851.40x = 158,546.70 × 64,225.80
4. Step 4: Simplify right side
   105,851.40x = 10,182,788,644.86
5. Step 5: Solve for x
   x = 10,182,788,644.86/105,851.40
6. Step 6: Final answer
   x = 96,198.90