Finding the Fourth Proportional to 78,328.17, 108,092.94 and 42,518.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,328.17 : 108,092.94 = 42,518.16 : x
2. Step 2: Convert to fraction form
   78,328.17/108,092.94 = 42,518.16/x
3. Step 3: Cross multiply
   78,328.17x = 108,092.94 × 42,518.16
4. Step 4: Simplify right side
   78,328.17x = 4,595,912,917.79
5. Step 5: Solve for x
   x = 4,595,912,917.79/78,328.17
6. Step 6: Final answer
   x = 58,675.10