Finding the Fourth Proportional to 42,002.96, 57,910.28 and 34,421.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,002.96 : 57,910.28 = 34,421.36 : x
2. Step 2: Convert to fraction form
   42,002.96/57,910.28 = 34,421.36/x
3. Step 3: Cross multiply
   42,002.96x = 57,910.28 × 34,421.36
4. Step 4: Simplify right side
   42,002.96x = 1,993,350,595.58
5. Step 5: Solve for x
   x = 1,993,350,595.58/42,002.96
6. Step 6: Final answer
   x = 47,457.38