Finding the Fourth Proportional to 112,105.09, 168,155.49 and 45,499.39

Step by Step Solution

1. Step 1: Write the proportion equation
   112,105.09 : 168,155.49 = 45,499.39 : x
2. Step 2: Convert to fraction form
   112,105.09/168,155.49 = 45,499.39/x
3. Step 3: Cross multiply
   112,105.09x = 168,155.49 × 45,499.39
4. Step 4: Simplify right side
   112,105.09x = 7,650,972,220.15
5. Step 5: Solve for x
   x = 7,650,972,220.15/112,105.09
6. Step 6: Final answer
   x = 68,248.21