Finding the Fourth Proportional to 162,258.87, 243,388.50 and 42,315.75

Step by Step Solution

1. Step 1: Write the proportion equation
   162,258.87 : 243,388.50 = 42,315.75 : x
2. Step 2: Convert to fraction form
   162,258.87/243,388.50 = 42,315.75/x
3. Step 3: Cross multiply
   162,258.87x = 243,388.50 × 42,315.75
4. Step 4: Simplify right side
   162,258.87x = 10,299,166,918.88
5. Step 5: Solve for x
   x = 10,299,166,918.88/162,258.87
6. Step 6: Final answer
   x = 63,473.68