Finding the Fourth Proportional to 78,370.18, 108,147.87 and 42,559.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,370.18 : 108,147.87 = 42,559.42 : x
2. Step 2: Convert to fraction form
   78,370.18/108,147.87 = 42,559.42/x
3. Step 3: Cross multiply
   78,370.18x = 108,147.87 × 42,559.42
4. Step 4: Simplify right side
   78,370.18x = 4,602,710,621.44
5. Step 5: Solve for x
   x = 4,602,710,621.44/78,370.18
6. Step 6: Final answer
   x = 58,730.38