Finding the Fourth Proportional to 71,643.42, 107,456.94 and 19,056.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,643.42 : 107,456.94 = 19,056.96 : x
2. Step 2: Convert to fraction form
   71,643.42/107,456.94 = 19,056.96/x
3. Step 3: Cross multiply
   71,643.42x = 107,456.94 × 19,056.96
4. Step 4: Simplify right side
   71,643.42x = 2,047,802,607.30
5. Step 5: Solve for x
   x = 2,047,802,607.30/71,643.42
6. Step 6: Final answer
   x = 28,583.26