Finding the Fourth Proportional to 72,279.72, 99,727.05 and 41,645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,279.72 : 99,727.05 = 41,645.31 : x
2. Step 2: Convert to fraction form
   72,279.72/99,727.05 = 41,645.31/x
3. Step 3: Cross multiply
   72,279.72x = 99,727.05 × 41,645.31
4. Step 4: Simplify right side
   72,279.72x = 4,153,163,912.64
5. Step 5: Solve for x
   x = 4,153,163,912.64/72,279.72
6. Step 6: Final answer
   x = 57,459.60