Finding the Fourth Proportional to 42,020.62, 57,987.30 and 23,157.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,020.62 : 57,987.30 = 23,157.34 : x
2. Step 2: Convert to fraction form
   42,020.62/57,987.30 = 23,157.34/x
3. Step 3: Cross multiply
   42,020.62x = 57,987.30 × 23,157.34
4. Step 4: Simplify right side
   42,020.62x = 1,342,831,621.78
5. Step 5: Solve for x
   x = 1,342,831,621.78/42,020.62
6. Step 6: Final answer
   x = 31,956.49