Finding the Fourth Proportional to 35,787.16, 49,384.78 and 19,870.66

Step by Step Solution

1. Step 1: Write the proportion equation
   35,787.16 : 49,384.78 = 19,870.66 : x
2. Step 2: Convert to fraction form
   35,787.16/49,384.78 = 19,870.66/x
3. Step 3: Cross multiply
   35,787.16x = 49,384.78 × 19,870.66
4. Step 4: Simplify right side
   35,787.16x = 981,308,172.55
5. Step 5: Solve for x
   x = 981,308,172.55/35,787.16
6. Step 6: Final answer
   x = 27,420.68