Finding the Fourth Proportional to 42,120.82, 63,180.15 and 17,160.77

Step by Step Solution

1. Step 1: Write the proportion equation
   42,120.82 : 63,180.15 = 17,160.77 : x
2. Step 2: Convert to fraction form
   42,120.82/63,180.15 = 17,160.77/x
3. Step 3: Cross multiply
   42,120.82x = 63,180.15 × 17,160.77
4. Step 4: Simplify right side
   42,120.82x = 1,084,220,301.69
5. Step 5: Solve for x
   x = 1,084,220,301.69/42,120.82
6. Step 6: Final answer
   x = 25,740.72