Finding the Fourth Proportional to 78,431.16, 117,646.56 and 22,271.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,431.16 : 117,646.56 = 22,271.34 : x
2. Step 2: Convert to fraction form
   78,431.16/117,646.56 = 22,271.34/x
3. Step 3: Cross multiply
   78,431.16x = 117,646.56 × 22,271.34
4. Step 4: Simplify right side
   78,431.16x = 2,620,146,537.59
5. Step 5: Solve for x
   x = 2,620,146,537.59/78,431.16
6. Step 6: Final answer
   x = 33,406.96