Finding the Fourth Proportional to 42,020, 57,988.80 and 23,158.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,020 : 57,988.80 = 23,158.34 : x
2. Step 2: Convert to fraction form
   42,020/57,988.80 = 23,158.34/x
3. Step 3: Cross multiply
   42,020x = 57,988.80 × 23,158.34
4. Step 4: Simplify right side
   42,020x = 1,342,924,346.59
5. Step 5: Solve for x
   x = 1,342,924,346.59/42,020
6. Step 6: Final answer
   x = 31,959.17