Finding the Fourth Proportional to 59,979.08, 89,968.59 and 17,859.76

Step by Step Solution

1. Step 1: Write the proportion equation
   59,979.08 : 89,968.59 = 17,859.76 : x
2. Step 2: Convert to fraction form
   59,979.08/89,968.59 = 17,859.76/x
3. Step 3: Cross multiply
   59,979.08x = 89,968.59 × 17,859.76
4. Step 4: Simplify right side
   59,979.08x = 1,606,817,200.02
5. Step 5: Solve for x
   x = 1,606,817,200.02/59,979.08
6. Step 6: Final answer
   x = 26,789.63