Finding the Fourth Proportional to 72,368.35, 99,868.17 and 40,536.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,368.35 : 99,868.17 = 40,536.56 : x
2. Step 2: Convert to fraction form
   72,368.35/99,868.17 = 40,536.56/x
3. Step 3: Cross multiply
   72,368.35x = 99,868.17 × 40,536.56
4. Step 4: Simplify right side
   72,368.35x = 4,048,312,466.98
5. Step 5: Solve for x
   x = 4,048,312,466.98/72,368.35
6. Step 6: Final answer
   x = 55,940.37