Finding the Fourth Proportional to 105,687.82, 158,551.76 and 55,720.68

Step by Step Solution

1. Step 1: Write the proportion equation
   105,687.82 : 158,551.76 = 55,720.68 : x
2. Step 2: Convert to fraction form
   105,687.82/158,551.76 = 55,720.68/x
3. Step 3: Cross multiply
   105,687.82x = 158,551.76 × 55,720.68
4. Step 4: Simplify right side
   105,687.82x = 8,834,611,882.40
5. Step 5: Solve for x
   x = 8,834,611,882.40/105,687.82
6. Step 6: Final answer
   x = 83,591.58