Finding the Fourth Proportional to 259,064.58, 388,594.71 and 72,075.54

Step by Step Solution

1. Step 1: Write the proportion equation
   259,064.58 : 388,594.71 = 72,075.54 : x
2. Step 2: Convert to fraction form
   259,064.58/388,594.71 = 72,075.54/x
3. Step 3: Cross multiply
   259,064.58x = 388,594.71 × 72,075.54
4. Step 4: Simplify right side
   259,064.58x = 28,008,173,564.39
5. Step 5: Solve for x
   x = 28,008,173,564.39/259,064.58
6. Step 6: Final answer
   x = 108,112.71