Finding the Fourth Proportional to 112,620.72, 168,594.52 and 68,112.84

Step by Step Solution

1. Step 1: Write the proportion equation
   112,620.72 : 168,594.52 = 68,112.84 : x
2. Step 2: Convert to fraction form
   112,620.72/168,594.52 = 68,112.84/x
3. Step 3: Cross multiply
   112,620.72x = 168,594.52 × 68,112.84
4. Step 4: Simplify right side
   112,620.72x = 11,483,451,565.64
5. Step 5: Solve for x
   x = 11,483,451,565.64/112,620.72
6. Step 6: Final answer
   x = 101,965.71