Finding the Fourth Proportional to 84,109.91, 126,060.98 and 72,179.83

Step by Step Solution

1. Step 1: Write the proportion equation
   84,109.91 : 126,060.98 = 72,179.83 : x
2. Step 2: Convert to fraction form
   84,109.91/126,060.98 = 72,179.83/x
3. Step 3: Cross multiply
   84,109.91x = 126,060.98 × 72,179.83
4. Step 4: Simplify right side
   84,109.91x = 9,099,059,114.83
5. Step 5: Solve for x
   x = 9,099,059,114.83/84,109.91
6. Step 6: Final answer
   x = 108,180.58