Finding the Fourth Proportional to 112,441.98, 168,687.27 and 42,321.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112,441.98 : 168,687.27 = 42,321.09 : x
2. Step 2: Convert to fraction form
   112,441.98/168,687.27 = 42,321.09/x
3. Step 3: Cross multiply
   112,441.98x = 168,687.27 × 42,321.09
4. Step 4: Simplify right side
   112,441.98x = 7,139,029,135.52
5. Step 5: Solve for x
   x = 7,139,029,135.52/112,441.98
6. Step 6: Final answer
   x = 63,490.78