Finding the Fourth Proportional to 71,780.52, 107,662.56 and 19,194.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,780.52 : 107,662.56 = 19,194.10 : x
2. Step 2: Convert to fraction form
   71,780.52/107,662.56 = 19,194.10/x
3. Step 3: Cross multiply
   71,780.52x = 107,662.56 × 19,194.10
4. Step 4: Simplify right side
   71,780.52x = 2,066,485,894.91
5. Step 5: Solve for x
   x = 2,066,485,894.91/71,780.52
6. Step 6: Final answer
   x = 28,788.95