Finding the Fourth Proportional to 112,339.12, 168,425.52 and 53,105.62

Step by Step Solution

1. Step 1: Write the proportion equation
   112,339.12 : 168,425.52 = 53,105.62 : x
2. Step 2: Convert to fraction form
   112,339.12/168,425.52 = 53,105.62/x
3. Step 3: Cross multiply
   112,339.12x = 168,425.52 × 53,105.62
4. Step 4: Simplify right side
   112,339.12x = 8,944,341,663.42
5. Step 5: Solve for x
   x = 8,944,341,663.42/112,339.12
6. Step 6: Final answer
   x = 79,619.12