Finding the Fourth Proportional to 91,339.08, 126,086.79 and 55,540.59

Step by Step Solution

1. Step 1: Write the proportion equation
   91,339.08 : 126,086.79 = 55,540.59 : x
2. Step 2: Convert to fraction form
   91,339.08/126,086.79 = 55,540.59/x
3. Step 3: Cross multiply
   91,339.08x = 126,086.79 × 55,540.59
4. Step 4: Simplify right side
   91,339.08x = 7,002,934,707.81
5. Step 5: Solve for x
   x = 7,002,934,707.81/91,339.08
6. Step 6: Final answer
   x = 76,669.64