Finding the Fourth Proportional to 91,479.09, 126,245.03 and 56,561.34

Step by Step Solution

1. Step 1: Write the proportion equation
   91,479.09 : 126,245.03 = 56,561.34 : x
2. Step 2: Convert to fraction form
   91,479.09/126,245.03 = 56,561.34/x
3. Step 3: Cross multiply
   91,479.09x = 126,245.03 × 56,561.34
4. Step 4: Simplify right side
   91,479.09x = 7,140,587,782.33
5. Step 5: Solve for x
   x = 7,140,587,782.33/91,479.09
6. Step 6: Final answer
   x = 78,057.05