Finding the Fourth Proportional to 105,966.09, 158,947.25 and 42,784.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,966.09 : 158,947.25 = 42,784.61 : x
2. Step 2: Convert to fraction form
   105,966.09/158,947.25 = 42,784.61/x
3. Step 3: Cross multiply
   105,966.09x = 158,947.25 × 42,784.61
4. Step 4: Simplify right side
   105,966.09x = 6,800,495,093.16
5. Step 5: Solve for x
   x = 6,800,495,093.16/105,966.09
6. Step 6: Final answer
   x = 64,176.14