Finding the Fourth Proportional to 72,414.30, 99,926.28 and 40,577.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72,414.30 : 99,926.28 = 40,577.07 : x
2. Step 2: Convert to fraction form
   72,414.30/99,926.28 = 40,577.07/x
3. Step 3: Cross multiply
   72,414.30x = 99,926.28 × 40,577.07
4. Step 4: Simplify right side
   72,414.30x = 4,054,715,658.40
5. Step 5: Solve for x
   x = 4,054,715,658.40/72,414.30
6. Step 6: Final answer
   x = 55,993.30