Finding the Fourth Proportional to 108,565.76, 162,608.04 and 83,420.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,565.76 : 162,608.04 = 83,420.72 : x
2. Step 2: Convert to fraction form
   108,565.76/162,608.04 = 83,420.72/x
3. Step 3: Cross multiply
   108,565.76x = 162,608.04 × 83,420.72
4. Step 4: Simplify right side
   108,565.76x = 13,564,879,774.59
5. Step 5: Solve for x
   x = 13,564,879,774.59/108,565.76
6. Step 6: Final answer
   x = 124,946.21