Finding the Fourth Proportional to 72,415.89, 99,932.22 and 40,150.35

Step by Step Solution

1. Step 1: Write the proportion equation
   72,415.89 : 99,932.22 = 40,150.35 : x
2. Step 2: Convert to fraction form
   72,415.89/99,932.22 = 40,150.35/x
3. Step 3: Cross multiply
   72,415.89x = 99,932.22 × 40,150.35
4. Step 4: Simplify right side
   72,415.89x = 4,012,313,609.28
5. Step 5: Solve for x
   x = 4,012,313,609.28/72,415.89
6. Step 6: Final answer
   x = 55,406.54