Finding the Fourth Proportional to 71,978.27, 107,955.10 and 19,375.45

Step by Step Solution

1. Step 1: Write the proportion equation
   71,978.27 : 107,955.10 = 19,375.45 : x
2. Step 2: Convert to fraction form
   71,978.27/107,955.10 = 19,375.45/x
3. Step 3: Cross multiply
   71,978.27x = 107,955.10 × 19,375.45
4. Step 4: Simplify right side
   71,978.27x = 2,091,679,058.37
5. Step 5: Solve for x
   x = 2,091,679,058.37/71,978.27
6. Step 6: Final answer
   x = 29,059.87