Finding the Fourth Proportional to 76,739.83, 105,886.89 and 42,747.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,739.83 : 105,886.89 = 42,747.47 : x
2. Step 2: Convert to fraction form
   76,739.83/105,886.89 = 42,747.47/x
3. Step 3: Cross multiply
   76,739.83x = 105,886.89 × 42,747.47
4. Step 4: Simplify right side
   76,739.83x = 4,526,396,124.23
5. Step 5: Solve for x
   x = 4,526,396,124.23/76,739.83
6. Step 6: Final answer
   x = 58,983.66