Finding the Fourth Proportional to 72,322.76, 99,805.56 and 40,493

Step by Step Solution

1. Step 1: Write the proportion equation
   72,322.76 : 99,805.56 = 40,493 : x
2. Step 2: Convert to fraction form
   72,322.76/99,805.56 = 40,493/x
3. Step 3: Cross multiply
   72,322.76x = 99,805.56 × 40,493
4. Step 4: Simplify right side
   72,322.76x = 4,041,426,541.08
5. Step 5: Solve for x
   x = 4,041,426,541.08/72,322.76
6. Step 6: Final answer
   x = 55,880.42