Finding the Fourth Proportional to 81,106.33, 111,113.81 and 78,074.00

Step by Step Solution

1. Step 1: Write the proportion equation
   81,106.33 : 111,113.81 = 78,074.00 : x
2. Step 2: Convert to fraction form
   81,106.33/111,113.81 = 78,074.00/x
3. Step 3: Cross multiply
   81,106.33x = 111,113.81 × 78,074.00
4. Step 4: Simplify right side
   81,106.33x = 8,675,099,052.95
5. Step 5: Solve for x
   x = 8,675,099,052.95/81,106.33
6. Step 6: Final answer
   x = 106,959.58