Finding the Fourth Proportional to 72,329.56, 99,805.80 and 40,493.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,329.56 : 99,805.80 = 40,493.32 : x
2. Step 2: Convert to fraction form
   72,329.56/99,805.80 = 40,493.32/x
3. Step 3: Cross multiply
   72,329.56x = 99,805.80 × 40,493.32
4. Step 4: Simplify right side
   72,329.56x = 4,041,468,099.59
5. Step 5: Solve for x
   x = 4,041,468,099.59/72,329.56
6. Step 6: Final answer
   x = 55,875.75