Finding the Fourth Proportional to 105,661.30, 158,632.72 and 61,319.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,661.30 : 158,632.72 = 61,319.88 : x
2. Step 2: Convert to fraction form
   105,661.30/158,632.72 = 61,319.88/x
3. Step 3: Cross multiply
   105,661.30x = 158,632.72 × 61,319.88
4. Step 4: Simplify right side
   105,661.30x = 9,727,339,354.47
5. Step 5: Solve for x
   x = 9,727,339,354.47/105,661.30
6. Step 6: Final answer
   x = 92,061.51