Finding the Fourth Proportional to 105,474.58, 158,212.50 and 43,145.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,474.58 : 158,212.50 = 43,145.08 : x
2. Step 2: Convert to fraction form
   105,474.58/158,212.50 = 43,145.08/x
3. Step 3: Cross multiply
   105,474.58x = 158,212.50 × 43,145.08
4. Step 4: Simplify right side
   105,474.58x = 6,826,090,969.50
5. Step 5: Solve for x
   x = 6,826,090,969.50/105,474.58
6. Step 6: Final answer
   x = 64,717.88