Finding the Fourth Proportional to 78,618.42, 117,931.68 and 22,454.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,618.42 : 117,931.68 = 22,454.10 : x
2. Step 2: Convert to fraction form
   78,618.42/117,931.68 = 22,454.10/x
3. Step 3: Cross multiply
   78,618.42x = 117,931.68 × 22,454.10
4. Step 4: Simplify right side
   78,618.42x = 2,648,049,735.89
5. Step 5: Solve for x
   x = 2,648,049,735.89/78,618.42
6. Step 6: Final answer
   x = 33,682.31