Finding the Fourth Proportional to 78,328.59, 108,093.52 and 42,518.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,328.59 : 108,093.52 = 42,518.58 : x
2. Step 2: Convert to fraction form
   78,328.59/108,093.52 = 42,518.58/x
3. Step 3: Cross multiply
   78,328.59x = 108,093.52 × 42,518.58
4. Step 4: Simplify right side
   78,328.59x = 4,595,982,977.60
5. Step 5: Solve for x
   x = 4,595,982,977.60/78,328.59
6. Step 6: Final answer
   x = 58,675.68