Finding the Fourth Proportional to 105,554.24, 158,316.72 and 26,663.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,554.24 : 158,316.72 = 26,663.60 : x
2. Step 2: Convert to fraction form
   105,554.24/158,316.72 = 26,663.60/x
3. Step 3: Cross multiply
   105,554.24x = 158,316.72 × 26,663.60
4. Step 4: Simplify right side
   105,554.24x = 4,221,293,695.39
5. Step 5: Solve for x
   x = 4,221,293,695.39/105,554.24
6. Step 6: Final answer
   x = 39,991.70