Finding the Fourth Proportional to 105,718.72, 158,527.86 and 61,359.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,718.72 : 158,527.86 = 61,359.07 : x
2. Step 2: Convert to fraction form
   105,718.72/158,527.86 = 61,359.07/x
3. Step 3: Cross multiply
   105,718.72x = 158,527.86 × 61,359.07
4. Step 4: Simplify right side
   105,718.72x = 9,727,122,058.69
5. Step 5: Solve for x
   x = 9,727,122,058.69/105,718.72
6. Step 6: Final answer
   x = 92,009.46