Finding the Fourth Proportional to 71,663.78, 107,498.10 and 19,073.31

Step by Step Solution

1. Step 1: Write the proportion equation
   71,663.78 : 107,498.10 = 19,073.31 : x
2. Step 2: Convert to fraction form
   71,663.78/107,498.10 = 19,073.31/x
3. Step 3: Cross multiply
   71,663.78x = 107,498.10 × 19,073.31
4. Step 4: Simplify right side
   71,663.78x = 2,050,344,585.71
5. Step 5: Solve for x
   x = 2,050,344,585.71/71,663.78
6. Step 6: Final answer
   x = 28,610.61