Finding the Fourth Proportional to 122,062.80, 168,390.72 and 73,683.12

Step by Step Solution

1. Step 1: Write the proportion equation
   122,062.80 : 168,390.72 = 73,683.12 : x
2. Step 2: Convert to fraction form
   122,062.80/168,390.72 = 73,683.12/x
3. Step 3: Cross multiply
   122,062.80x = 168,390.72 × 73,683.12
4. Step 4: Simplify right side
   122,062.80x = 12,407,553,628.65
5. Step 5: Solve for x
   x = 12,407,553,628.65/122,062.80
6. Step 6: Final answer
   x = 101,648.94