Finding the Fourth Proportional to 59,910.16, 89,852.42 and 17,780.20

Step by Step Solution

1. Step 1: Write the proportion equation
   59,910.16 : 89,852.42 = 17,780.20 : x
2. Step 2: Convert to fraction form
   59,910.16/89,852.42 = 17,780.20/x
3. Step 3: Cross multiply
   59,910.16x = 89,852.42 × 17,780.20
4. Step 4: Simplify right side
   59,910.16x = 1,597,593,998.08
5. Step 5: Solve for x
   x = 1,597,593,998.08/59,910.16
6. Step 6: Final answer
   x = 26,666.50