Finding the Fourth Proportional to 105,903.96, 158,886.69 and 42,691.46

Step by Step Solution

1. Step 1: Write the proportion equation
   105,903.96 : 158,886.69 = 42,691.46 : x
2. Step 2: Convert to fraction form
   105,903.96/158,886.69 = 42,691.46/x
3. Step 3: Cross multiply
   105,903.96x = 158,886.69 × 42,691.46
4. Step 4: Simplify right side
   105,903.96x = 6,783,104,610.57
5. Step 5: Solve for x
   x = 6,783,104,610.57/105,903.96
6. Step 6: Final answer
   x = 64,049.59