Finding the Fourth Proportional to 112,309.11, 168,488.78 and 42,189.03

Step by Step Solution

1. Step 1: Write the proportion equation
   112,309.11 : 168,488.78 = 42,189.03 : x
2. Step 2: Convert to fraction form
   112,309.11/168,488.78 = 42,189.03/x
3. Step 3: Cross multiply
   112,309.11x = 168,488.78 × 42,189.03
4. Step 4: Simplify right side
   112,309.11x = 7,108,377,983.14
5. Step 5: Solve for x
   x = 7,108,377,983.14/112,309.11
6. Step 6: Final answer
   x = 63,292.98