Finding the Fourth Proportional to 104,997.52, 144,948.24 and 72,756.56

Step by Step Solution

1. Step 1: Write the proportion equation
   104,997.52 : 144,948.24 = 72,756.56 : x
2. Step 2: Convert to fraction form
   104,997.52/144,948.24 = 72,756.56/x
3. Step 3: Cross multiply
   104,997.52x = 144,948.24 × 72,756.56
4. Step 4: Simplify right side
   104,997.52x = 10,545,935,320.45
5. Step 5: Solve for x
   x = 10,545,935,320.45/104,997.52
6. Step 6: Final answer
   x = 100,439.85