Finding the Fourth Proportional to 72,076.88, 99,466.06 and 40,245.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,076.88 : 99,466.06 = 40,245.76 : x
2. Step 2: Convert to fraction form
   72,076.88/99,466.06 = 40,245.76/x
3. Step 3: Cross multiply
   72,076.88x = 99,466.06 × 40,245.76
4. Step 4: Simplify right side
   72,076.88x = 4,003,087,178.91
5. Step 5: Solve for x
   x = 4,003,087,178.91/72,076.88
6. Step 6: Final answer
   x = 55,539.13