Finding the Fourth Proportional to 123,834.24, 170,894.64 and 72,850.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,834.24 : 170,894.64 = 72,850.56 : x
2. Step 2: Convert to fraction form
   123,834.24/170,894.64 = 72,850.56/x
3. Step 3: Cross multiply
   123,834.24x = 170,894.64 × 72,850.56
4. Step 4: Simplify right side
   123,834.24x = 12,449,770,225.00
5. Step 5: Solve for x
   x = 12,449,770,225.00/123,834.24
6. Step 6: Final answer
   x = 100,535.77