Finding the Fourth Proportional to 78,839.08, 118,293.84 and 42,826.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,839.08 : 118,293.84 = 42,826.48 : x
2. Step 2: Convert to fraction form
   78,839.08/118,293.84 = 42,826.48/x
3. Step 3: Cross multiply
   78,839.08x = 118,293.84 × 42,826.48
4. Step 4: Simplify right side
   78,839.08x = 5,066,108,772.88
5. Step 5: Solve for x
   x = 5,066,108,772.88/78,839.08
6. Step 6: Final answer
   x = 64,258.85