Finding the Fourth Proportional to 91,843.43, 126,757.78 and 56,054.21

Step by Step Solution

1. Step 1: Write the proportion equation
   91,843.43 : 126,757.78 = 56,054.21 : x
2. Step 2: Convert to fraction form
   91,843.43/126,757.78 = 56,054.21/x
3. Step 3: Cross multiply
   91,843.43x = 126,757.78 × 56,054.21
4. Step 4: Simplify right side
   91,843.43x = 7,105,306,445.33
5. Step 5: Solve for x
   x = 7,105,306,445.33/91,843.43
6. Step 6: Final answer
   x = 77,363.26