Finding the Fourth Proportional to 91,865.55, 126,766.71 and 55,580.52

Step by Step Solution

1. Step 1: Write the proportion equation
   91,865.55 : 126,766.71 = 55,580.52 : x
2. Step 2: Convert to fraction form
   91,865.55/126,766.71 = 55,580.52/x
3. Step 3: Cross multiply
   91,865.55x = 126,766.71 × 55,580.52
4. Step 4: Simplify right side
   91,865.55x = 7,045,759,660.49
5. Step 5: Solve for x
   x = 7,045,759,660.49/91,865.55
6. Step 6: Final answer
   x = 76,696.43