Finding the Fourth Proportional to 111,890.10, 168,029.55 and 59,402.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,890.10 : 168,029.55 = 59,402.10 : x
2. Step 2: Convert to fraction form
   111,890.10/168,029.55 = 59,402.10/x
3. Step 3: Cross multiply
   111,890.10x = 168,029.55 × 59,402.10
4. Step 4: Simplify right side
   111,890.10x = 9,981,308,132.06
5. Step 5: Solve for x
   x = 9,981,308,132.06/111,890.10
6. Step 6: Final answer
   x = 89,206.36