Finding the Fourth Proportional to 122,111.34, 168,521.42 and 68,399.64

Step by Step Solution

1. Step 1: Write the proportion equation
   122,111.34 : 168,521.42 = 68,399.64 : x
2. Step 2: Convert to fraction form
   122,111.34/168,521.42 = 68,399.64/x
3. Step 3: Cross multiply
   122,111.34x = 168,521.42 × 68,399.64
4. Step 4: Simplify right side
   122,111.34x = 11,526,804,460.29
5. Step 5: Solve for x
   x = 11,526,804,460.29/122,111.34
6. Step 6: Final answer
   x = 94,395.86