Finding the Fourth Proportional to 72,153.33, 99,571.85 and 40,322.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,153.33 : 99,571.85 = 40,322.76 : x
2. Step 2: Convert to fraction form
   72,153.33/99,571.85 = 40,322.76/x
3. Step 3: Cross multiply
   72,153.33x = 99,571.85 × 40,322.76
4. Step 4: Simplify right side
   72,153.33x = 4,015,011,810.31
5. Step 5: Solve for x
   x = 4,015,011,810.31/72,153.33
6. Step 6: Final answer
   x = 55,645.55