Finding the Fourth Proportional to 42,116.64, 63,120.32 and 17,127.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,116.64 : 63,120.32 = 17,127.60 : x
2. Step 2: Convert to fraction form
   42,116.64/63,120.32 = 17,127.60/x
3. Step 3: Cross multiply
   42,116.64x = 63,120.32 × 17,127.60
4. Step 4: Simplify right side
   42,116.64x = 1,081,099,592.83
5. Step 5: Solve for x
   x = 1,081,099,592.83/42,116.64
6. Step 6: Final answer
   x = 25,669.18