Finding the Fourth Proportional to 123,835.89, 170,894.18 and 70,131.36

Step by Step Solution

1. Step 1: Write the proportion equation
   123,835.89 : 170,894.18 = 70,131.36 : x
2. Step 2: Convert to fraction form
   123,835.89/170,894.18 = 70,131.36/x
3. Step 3: Cross multiply
   123,835.89x = 170,894.18 × 70,131.36
4. Step 4: Simplify right side
   123,835.89x = 11,985,040,054.36
5. Step 5: Solve for x
   x = 11,985,040,054.36/123,835.89
6. Step 6: Final answer
   x = 96,781.64