Finding the Fourth Proportional to 161,664.91, 223,074.72 and 91,811.83

Step by Step Solution

1. Step 1: Write the proportion equation
   161,664.91 : 223,074.72 = 91,811.83 : x
2. Step 2: Convert to fraction form
   161,664.91/223,074.72 = 91,811.83/x
3. Step 3: Cross multiply
   161,664.91x = 223,074.72 × 91,811.83
4. Step 4: Simplify right side
   161,664.91x = 20,480,898,269.94
5. Step 5: Solve for x
   x = 20,480,898,269.94/161,664.91
6. Step 6: Final answer
   x = 126,687.35