Finding the Fourth Proportional to 82,678.72, 114,149.28 and 54,433.12

Step by Step Solution

1. Step 1: Write the proportion equation
   82,678.72 : 114,149.28 = 54,433.12 : x
2. Step 2: Convert to fraction form
   82,678.72/114,149.28 = 54,433.12/x
3. Step 3: Cross multiply
   82,678.72x = 114,149.28 × 54,433.12
4. Step 4: Simplify right side
   82,678.72x = 6,213,501,456.15
5. Step 5: Solve for x
   x = 6,213,501,456.15/82,678.72
6. Step 6: Final answer
   x = 75,152.37