Finding the Fourth Proportional to 78,704.78, 118,074.71 and 28,783.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,704.78 : 118,074.71 = 28,783.77 : x
2. Step 2: Convert to fraction form
   78,704.78/118,074.71 = 28,783.77/x
3. Step 3: Cross multiply
   78,704.78x = 118,074.71 × 28,783.77
4. Step 4: Simplify right side
   78,704.78x = 3,398,635,588.81
5. Step 5: Solve for x
   x = 3,398,635,588.81/78,704.78
6. Step 6: Final answer
   x = 43,182.07