Finding the Fourth Proportional to 278,055.58, 416,802.94 and 109,510.78

Step by Step Solution

1. Step 1: Write the proportion equation
   278,055.58 : 416,802.94 = 109,510.78 : x
2. Step 2: Convert to fraction form
   278,055.58/416,802.94 = 109,510.78/x
3. Step 3: Cross multiply
   278,055.58x = 416,802.94 × 109,510.78
4. Step 4: Simplify right side
   278,055.58x = 45,644,415,065.69
5. Step 5: Solve for x
   x = 45,644,415,065.69/278,055.58
6. Step 6: Final answer
   x = 164,155.72