Finding the Fourth Proportional to 42,005.17, 62,862.42 and 34,421.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42,005.17 : 62,862.42 = 34,421.05 : x
2. Step 2: Convert to fraction form
   42,005.17/62,862.42 = 34,421.05/x
3. Step 3: Cross multiply
   42,005.17x = 62,862.42 × 34,421.05
4. Step 4: Simplify right side
   42,005.17x = 2,163,790,501.94
5. Step 5: Solve for x
   x = 2,163,790,501.94/42,005.17
6. Step 6: Final answer
   x = 51,512.48