Finding the Fourth Proportional to 72,091.32, 99,485.82 and 40,260.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,091.32 : 99,485.82 = 40,260.24 : x
2. Step 2: Convert to fraction form
   72,091.32/99,485.82 = 40,260.24/x
3. Step 3: Cross multiply
   72,091.32x = 99,485.82 × 40,260.24
4. Step 4: Simplify right side
   72,091.32x = 4,005,322,989.80
5. Step 5: Solve for x
   x = 4,005,322,989.80/72,091.32
6. Step 6: Final answer
   x = 55,559.02