Finding the Fourth Proportional to 112,441.45, 168,642.73 and 42,321.37

Step by Step Solution

1. Step 1: Write the proportion equation
   112,441.45 : 168,642.73 = 42,321.37 : x
2. Step 2: Convert to fraction form
   112,441.45/168,642.73 = 42,321.37/x
3. Step 3: Cross multiply
   112,441.45x = 168,642.73 × 42,321.37
4. Step 4: Simplify right side
   112,441.45x = 7,137,191,374.14
5. Step 5: Solve for x
   x = 7,137,191,374.14/112,441.45
6. Step 6: Final answer
   x = 63,474.74