Finding the Fourth Proportional to 91,906.10, 126,863.01 and 55,609.42

Step by Step Solution

1. Step 1: Write the proportion equation
   91,906.10 : 126,863.01 = 55,609.42 : x
2. Step 2: Convert to fraction form
   91,906.10/126,863.01 = 55,609.42/x
3. Step 3: Cross multiply
   91,906.10x = 126,863.01 × 55,609.42
4. Step 4: Simplify right side
   91,906.10x = 7,054,778,405.55
5. Step 5: Solve for x
   x = 7,054,778,405.55/91,906.10
6. Step 6: Final answer
   x = 76,760.72