Finding the Fourth Proportional to 78,698.89, 108,601.32 and 42,888.14

Step by Step Solution

1. Step 1: Write the proportion equation
   78,698.89 : 108,601.32 = 42,888.14 : x
2. Step 2: Convert to fraction form
   78,698.89/108,601.32 = 42,888.14/x
3. Step 3: Cross multiply
   78,698.89x = 108,601.32 × 42,888.14
4. Step 4: Simplify right side
   78,698.89x = 4,657,708,616.34
5. Step 5: Solve for x
   x = 4,657,708,616.34/78,698.89
6. Step 6: Final answer
   x = 59,183.92