Finding the Fourth Proportional to 78,767.89, 108,698.38 and 42,955.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,767.89 : 108,698.38 = 42,955.77 : x
2. Step 2: Convert to fraction form
   78,767.89/108,698.38 = 42,955.77/x
3. Step 3: Cross multiply
   78,767.89x = 108,698.38 × 42,955.77
4. Step 4: Simplify right side
   78,767.89x = 4,669,222,420.27
5. Step 5: Solve for x
   x = 4,669,222,420.27/78,767.89
6. Step 6: Final answer
   x = 59,278.24