Finding the Fourth Proportional to 42,945.98, 59,293.28 and 27,639.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,945.98 : 59,293.28 = 27,639.38 : x
2. Step 2: Convert to fraction form
   42,945.98/59,293.28 = 27,639.38/x
3. Step 3: Cross multiply
   42,945.98x = 59,293.28 × 27,639.38
4. Step 4: Simplify right side
   42,945.98x = 1,638,829,714.70
5. Step 5: Solve for x
   x = 1,638,829,714.70/42,945.98
6. Step 6: Final answer
   x = 38,160.26