Finding the Fourth Proportional to 78,731.61, 108,648.27 and 42,919.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,731.61 : 108,648.27 = 42,919.44 : x
2. Step 2: Convert to fraction form
   78,731.61/108,648.27 = 42,919.44/x
3. Step 3: Cross multiply
   78,731.61x = 108,648.27 × 42,919.44
4. Step 4: Simplify right side
   78,731.61x = 4,663,122,905.37
5. Step 5: Solve for x
   x = 4,663,122,905.37/78,731.61
6. Step 6: Final answer
   x = 59,228.09