Finding the Fourth Proportional to 162,123.40, 243,069.90 and 73,419.40

Step by Step Solution

1. Step 1: Write the proportion equation
   162,123.40 : 243,069.90 = 73,419.40 : x
2. Step 2: Convert to fraction form
   162,123.40/243,069.90 = 73,419.40/x
3. Step 3: Cross multiply
   162,123.40x = 243,069.90 × 73,419.40
4. Step 4: Simplify right side
   162,123.40x = 17,846,046,216.06
5. Step 5: Solve for x
   x = 17,846,046,216.06/162,123.40
6. Step 6: Final answer
   x = 110,076.93