Finding the Fourth Proportional to 122,498.20, 168,656.48 and 104,521.06

Step by Step Solution

1. Step 1: Write the proportion equation
   122,498.20 : 168,656.48 = 104,521.06 : x
2. Step 2: Convert to fraction form
   122,498.20/168,656.48 = 104,521.06/x
3. Step 3: Cross multiply
   122,498.20x = 168,656.48 × 104,521.06
4. Step 4: Simplify right side
   122,498.20x = 17,628,152,699.58
5. Step 5: Solve for x
   x = 17,628,152,699.58/122,498.20
6. Step 6: Final answer
   x = 143,905.41