Finding the Fourth Proportional to 78,618.04, 108,491.34 and 42,808.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,618.04 : 108,491.34 = 42,808.48 : x
2. Step 2: Convert to fraction form
   78,618.04/108,491.34 = 42,808.48/x
3. Step 3: Cross multiply
   78,618.04x = 108,491.34 × 42,808.48
4. Step 4: Simplify right side
   78,618.04x = 4,644,349,358.56
5. Step 5: Solve for x
   x = 4,644,349,358.56/78,618.04
6. Step 6: Final answer
   x = 59,074.86