Finding the Fourth Proportional to 78,775.67, 108,707.86 and 42,966.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,775.67 : 108,707.86 = 42,966.38 : x
2. Step 2: Convert to fraction form
   78,775.67/108,707.86 = 42,966.38/x
3. Step 3: Cross multiply
   78,775.67x = 108,707.86 × 42,966.38
4. Step 4: Simplify right side
   78,775.67x = 4,670,783,221.75
5. Step 5: Solve for x
   x = 4,670,783,221.75/78,775.67
6. Step 6: Final answer
   x = 59,292.21