Finding the Fourth Proportional to 72,495.42, 108,738.27 and 19,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,495.42 : 108,738.27 = 19,900.50 : x
2. Step 2: Convert to fraction form
   72,495.42/108,738.27 = 19,900.50/x
3. Step 3: Cross multiply
   72,495.42x = 108,738.27 × 19,900.50
4. Step 4: Simplify right side
   72,495.42x = 2,163,945,942.14
5. Step 5: Solve for x
   x = 2,163,945,942.14/72,495.42
6. Step 6: Final answer
   x = 29,849.42