Finding the Fourth Proportional to 72,018.19, 108,008.83 and 49,524.21

Step by Step Solution

1. Step 1: Write the proportion equation
   72,018.19 : 108,008.83 = 49,524.21 : x
2. Step 2: Convert to fraction form
   72,018.19/108,008.83 = 49,524.21/x
3. Step 3: Cross multiply
   72,018.19x = 108,008.83 × 49,524.21
4. Step 4: Simplify right side
   72,018.19x = 5,349,051,978.77
5. Step 5: Solve for x
   x = 5,349,051,978.77/72,018.19
6. Step 6: Final answer
   x = 74,273.62