Finding the Fourth Proportional to 76,739.27, 105,898.59 and 42,747.71

Step by Step Solution

1. Step 1: Write the proportion equation
   76,739.27 : 105,898.59 = 42,747.71 : x
2. Step 2: Convert to fraction form
   76,739.27/105,898.59 = 42,747.71/x
3. Step 3: Cross multiply
   76,739.27x = 105,898.59 × 42,747.71
4. Step 4: Simplify right side
   76,739.27x = 4,526,921,685.24
5. Step 5: Solve for x
   x = 4,526,921,685.24/76,739.27
6. Step 6: Final answer
   x = 58,990.94