Finding the Fourth Proportional to 105,805.47, 158,752.73 and 65,857.87

Step by Step Solution

1. Step 1: Write the proportion equation
   105,805.47 : 158,752.73 = 65,857.87 : x
2. Step 2: Convert to fraction form
   105,805.47/158,752.73 = 65,857.87/x
3. Step 3: Cross multiply
   105,805.47x = 158,752.73 × 65,857.87
4. Step 4: Simplify right side
   105,805.47x = 10,455,116,422.25
5. Step 5: Solve for x
   x = 10,455,116,422.25/105,805.47
6. Step 6: Final answer
   x = 98,814.52