Finding the Fourth Proportional to 76,761.92, 105,939.32 and 42,775.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,761.92 : 105,939.32 = 42,775.94 : x
2. Step 2: Convert to fraction form
   76,761.92/105,939.32 = 42,775.94/x
3. Step 3: Cross multiply
   76,761.92x = 105,939.32 × 42,775.94
4. Step 4: Simplify right side
   76,761.92x = 4,531,654,046.93
5. Step 5: Solve for x
   x = 4,531,654,046.93/76,761.92
6. Step 6: Final answer
   x = 59,035.18