Finding the Fourth Proportional to 102,581.52, 153,871.56 and 55,218.96

Step by Step Solution

1. Step 1: Write the proportion equation
   102,581.52 : 153,871.56 = 55,218.96 : x
2. Step 2: Convert to fraction form
   102,581.52/153,871.56 = 55,218.96/x
3. Step 3: Cross multiply
   102,581.52x = 153,871.56 × 55,218.96
4. Step 4: Simplify right side
   102,581.52x = 8,496,627,516.78
5. Step 5: Solve for x
   x = 8,496,627,516.78/102,581.52
6. Step 6: Final answer
   x = 82,828.05