Finding the Fourth Proportional to 91,469.43, 126,208.88 and 62,778.55

Step by Step Solution

1. Step 1: Write the proportion equation
   91,469.43 : 126,208.88 = 62,778.55 : x
2. Step 2: Convert to fraction form
   91,469.43/126,208.88 = 62,778.55/x
3. Step 3: Cross multiply
   91,469.43x = 126,208.88 × 62,778.55
4. Step 4: Simplify right side
   91,469.43x = 7,923,210,483.52
5. Step 5: Solve for x
   x = 7,923,210,483.52/91,469.43
6. Step 6: Final answer
   x = 86,621.40