Finding the Fourth Proportional to 105,439.02, 158,158.60 and 43,109.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,439.02 : 158,158.60 = 43,109.52 : x
2. Step 2: Convert to fraction form
   105,439.02/158,158.60 = 43,109.52/x
3. Step 3: Cross multiply
   105,439.02x = 158,158.60 × 43,109.52
4. Step 4: Simplify right side
   105,439.02x = 6,818,141,329.87
5. Step 5: Solve for x
   x = 6,818,141,329.87/105,439.02
6. Step 6: Final answer
   x = 64,664.31