Finding the Fourth Proportional to 35,577.61, 49,100.21 and 19,665.16

Step by Step Solution

1. Step 1: Write the proportion equation
   35,577.61 : 49,100.21 = 19,665.16 : x
2. Step 2: Convert to fraction form
   35,577.61/49,100.21 = 19,665.16/x
3. Step 3: Cross multiply
   35,577.61x = 49,100.21 × 19,665.16
4. Step 4: Simplify right side
   35,577.61x = 965,563,141.86
5. Step 5: Solve for x
   x = 965,563,141.86/35,577.61
6. Step 6: Final answer
   x = 27,139.63