Finding the Fourth Proportional to 123,901.54, 170,978.60 and 70,185.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,901.54 : 170,978.60 = 70,185.47 : x
2. Step 2: Convert to fraction form
   123,901.54/170,978.60 = 70,185.47/x
3. Step 3: Cross multiply
   123,901.54x = 170,978.60 × 70,185.47
4. Step 4: Simplify right side
   123,901.54x = 12,000,212,721.51
5. Step 5: Solve for x
   x = 12,000,212,721.51/123,901.54
6. Step 6: Final answer
   x = 96,852.82