Finding the Fourth Proportional to 105,633.03, 158,342.93 and 66,217.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,633.03 : 158,342.93 = 66,217.82 : x
2. Step 2: Convert to fraction form
   105,633.03/158,342.93 = 66,217.82/x
3. Step 3: Cross multiply
   105,633.03x = 158,342.93 × 66,217.82
4. Step 4: Simplify right side
   105,633.03x = 10,485,123,701.78
5. Step 5: Solve for x
   x = 10,485,123,701.78/105,633.03
6. Step 6: Final answer
   x = 99,259.90