Finding the Fourth Proportional to 93,301.18, 128,676.39 and 78,836.23

Step by Step Solution

1. Step 1: Write the proportion equation
   93,301.18 : 128,676.39 = 78,836.23 : x
2. Step 2: Convert to fraction form
   93,301.18/128,676.39 = 78,836.23/x
3. Step 3: Cross multiply
   93,301.18x = 128,676.39 × 78,836.23
4. Step 4: Simplify right side
   93,301.18x = 10,144,361,477.61
5. Step 5: Solve for x
   x = 10,144,361,477.61/93,301.18
6. Step 6: Final answer
   x = 108,727.04