Finding the Fourth Proportional to 72,422,453.76, 99,940,993.20 and 39,827,405.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,422,453.76 : 99,940,993.20 = 39,827,405.76 : x
2. Step 2: Convert to fraction form
   72,422,453.76/99,940,993.20 = 39,827,405.76/x
3. Step 3: Cross multiply
   72,422,453.76x = 99,940,993.20 × 39,827,405.76
4. Step 4: Simplify right side
   72,422,453.76x = 3,980,390,488,233,800.50
5. Step 5: Solve for x
   x = 3,980,390,488,233,800.50/72,422,453.76
6. Step 6: Final answer
   x = 54,960,723.94