Finding the Fourth Proportional to 272,131.59, 408,189.84 and 72,453.69

Step by Step Solution

1. Step 1: Write the proportion equation
   272,131.59 : 408,189.84 = 72,453.69 : x
2. Step 2: Convert to fraction form
   272,131.59/408,189.84 = 72,453.69/x
3. Step 3: Cross multiply
   272,131.59x = 408,189.84 × 72,453.69
4. Step 4: Simplify right side
   272,131.59x = 29,574,860,128.51
5. Step 5: Solve for x
   x = 29,574,860,128.51/272,131.59
6. Step 6: Final answer
   x = 108,678.53