Finding the Fourth Proportional to 111,920.10, 168,074.55 and 59,432.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,920.10 : 168,074.55 = 59,432.10 : x
2. Step 2: Convert to fraction form
   111,920.10/168,074.55 = 59,432.10/x
3. Step 3: Cross multiply
   111,920.10x = 168,074.55 × 59,432.10
4. Step 4: Simplify right side
   111,920.10x = 9,989,023,463.06
5. Step 5: Solve for x
   x = 9,989,023,463.06/111,920.10
6. Step 6: Final answer
   x = 89,251.38