Finding the Fourth Proportional to 162,020.40, 243,076.37 and 55,427.42

Step by Step Solution

1. Step 1: Write the proportion equation
   162,020.40 : 243,076.37 = 55,427.42 : x
2. Step 2: Convert to fraction form
   162,020.40/243,076.37 = 55,427.42/x
3. Step 3: Cross multiply
   162,020.40x = 243,076.37 × 55,427.42
4. Step 4: Simplify right side
   162,020.40x = 13,473,094,559.55
5. Step 5: Solve for x
   x = 13,473,094,559.55/162,020.40
6. Step 6: Final answer
   x = 83,156.78