Finding the Fourth Proportional to 59,679.29, 89,499.80 and 19,689.31

Step by Step Solution

1. Step 1: Write the proportion equation
   59,679.29 : 89,499.80 = 19,689.31 : x
2. Step 2: Convert to fraction form
   59,679.29/89,499.80 = 19,689.31/x
3. Step 3: Cross multiply
   59,679.29x = 89,499.80 × 19,689.31
4. Step 4: Simplify right side
   59,679.29x = 1,762,189,468.24
5. Step 5: Solve for x
   x = 1,762,189,468.24/59,679.29
6. Step 6: Final answer
   x = 29,527.65