Finding the Fourth Proportional to 302,871.01, 454,271.34 and 78,213.78

Step by Step Solution

1. Step 1: Write the proportion equation
   302,871.01 : 454,271.34 = 78,213.78 : x
2. Step 2: Convert to fraction form
   302,871.01/454,271.34 = 78,213.78/x
3. Step 3: Cross multiply
   302,871.01x = 454,271.34 × 78,213.78
4. Step 4: Simplify right side
   302,871.01x = 35,530,280,097.46
5. Step 5: Solve for x
   x = 35,530,280,097.46/302,871.01
6. Step 6: Final answer
   x = 117,311.59