Finding the Fourth Proportional to 78,504.84, 117,788.72 and 28,588.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78,504.84 : 117,788.72 = 28,588.41 : x
2. Step 2: Convert to fraction form
   78,504.84/117,788.72 = 28,588.41/x
3. Step 3: Cross multiply
   78,504.84x = 117,788.72 × 28,588.41
4. Step 4: Simplify right side
   78,504.84x = 3,367,392,077.79
5. Step 5: Solve for x
   x = 3,367,392,077.79/78,504.84
6. Step 6: Final answer
   x = 42,894.07