Finding the Fourth Proportional to 144,535.86, 216,716.00 and 72,404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   144,535.86 : 216,716.00 = 72,404.88 : x
2. Step 2: Convert to fraction form
   144,535.86/216,716.00 = 72,404.88/x
3. Step 3: Cross multiply
   144,535.86x = 216,716.00 × 72,404.88
4. Step 4: Simplify right side
   144,535.86x = 15,691,295,612.06
5. Step 5: Solve for x
   x = 15,691,295,612.06/144,535.86
6. Step 6: Final answer
   x = 108,563.34