Finding the Fourth Proportional to 72,159, 99,544.68 and 45,288.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,159 : 99,544.68 = 45,288.24 : x
2. Step 2: Convert to fraction form
   72,159/99,544.68 = 45,288.24/x
3. Step 3: Cross multiply
   72,159x = 99,544.68 × 45,288.24
4. Step 4: Simplify right side
   72,159x = 4,508,203,358.56
5. Step 5: Solve for x
   x = 4,508,203,358.56/72,159
6. Step 6: Final answer
   x = 62,475.97