Finding the Fourth Proportional to 42,096.76, 63,128.64 and 15,787.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,096.76 : 63,128.64 = 15,787.16 : x
2. Step 2: Convert to fraction form
   42,096.76/63,128.64 = 15,787.16/x
3. Step 3: Cross multiply
   42,096.76x = 63,128.64 × 15,787.16
4. Step 4: Simplify right side
   42,096.76x = 996,621,940.26
5. Step 5: Solve for x
   x = 996,621,940.26/42,096.76
6. Step 6: Final answer
   x = 23,674.55