Finding the Fourth Proportional to 78,328.90, 108,093.54 and 42,518.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,328.90 : 108,093.54 = 42,518.62 : x
2. Step 2: Convert to fraction form
   78,328.90/108,093.54 = 42,518.62/x
3. Step 3: Cross multiply
   78,328.90x = 108,093.54 × 42,518.62
4. Step 4: Simplify right side
   78,328.90x = 4,595,988,151.71
5. Step 5: Solve for x
   x = 4,595,988,151.71/78,328.90
6. Step 6: Final answer
   x = 58,675.51