Finding the Fourth Proportional to 123,868.71, 170,991.14 and 83,636.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123,868.71 : 170,991.14 = 83,636.96 : x
2. Step 2: Convert to fraction form
   123,868.71/170,991.14 = 83,636.96/x
3. Step 3: Cross multiply
   123,868.71x = 170,991.14 × 83,636.96
4. Step 4: Simplify right side
   123,868.71x = 14,301,177,863.39
5. Step 5: Solve for x
   x = 14,301,177,863.39/123,868.71
6. Step 6: Final answer
   x = 115,454.32