Finding the Fourth Proportional to 72,296.88, 99,769.59 and 40,471.89

Step by Step Solution

1. Step 1: Write the proportion equation
   72,296.88 : 99,769.59 = 40,471.89 : x
2. Step 2: Convert to fraction form
   72,296.88/99,769.59 = 40,471.89/x
3. Step 3: Cross multiply
   72,296.88x = 99,769.59 × 40,471.89
4. Step 4: Simplify right side
   72,296.88x = 4,037,863,871.83
5. Step 5: Solve for x
   x = 4,037,863,871.83/72,296.88
6. Step 6: Final answer
   x = 55,851.15