Finding the Fourth Proportional to 76,786.26, 105,951.02 and 42,793.89

Step by Step Solution

1. Step 1: Write the proportion equation
   76,786.26 : 105,951.02 = 42,793.89 : x
2. Step 2: Convert to fraction form
   76,786.26/105,951.02 = 42,793.89/x
3. Step 3: Cross multiply
   76,786.26x = 105,951.02 × 42,793.89
4. Step 4: Simplify right side
   76,786.26x = 4,534,056,081.30
5. Step 5: Solve for x
   x = 4,534,056,081.30/76,786.26
6. Step 6: Final answer
   x = 59,047.75