Finding the Fourth Proportional to 71,782.66, 99,096 and 55,613.92

Step by Step Solution

1. Step 1: Write the proportion equation
   71,782.66 : 99,096 = 55,613.92 : x
2. Step 2: Convert to fraction form
   71,782.66/99,096 = 55,613.92/x
3. Step 3: Cross multiply
   71,782.66x = 99,096 × 55,613.92
4. Step 4: Simplify right side
   71,782.66x = 5,511,117,016.32
5. Step 5: Solve for x
   x = 5,511,117,016.32/71,782.66
6. Step 6: Final answer
   x = 76,775.05