Finding the Fourth Proportional to 78,648.44, 108,533.34 and 42,838.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,648.44 : 108,533.34 = 42,838.04 : x
2. Step 2: Convert to fraction form
   78,648.44/108,533.34 = 42,838.04/x
3. Step 3: Cross multiply
   78,648.44x = 108,533.34 × 42,838.04
4. Step 4: Simplify right side
   78,648.44x = 4,649,355,560.25
5. Step 5: Solve for x
   x = 4,649,355,560.25/78,648.44
6. Step 6: Final answer
   x = 59,115.67