Finding the Fourth Proportional to 105,749.22, 158,573.61 and 61,389.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,749.22 : 158,573.61 = 61,389.57 : x
2. Step 2: Convert to fraction form
   105,749.22/158,573.61 = 61,389.57/x
3. Step 3: Cross multiply
   105,749.22x = 158,573.61 × 61,389.57
4. Step 4: Simplify right side
   105,749.22x = 9,734,765,731.25
5. Step 5: Solve for x
   x = 9,734,765,731.25/105,749.22
6. Step 6: Final answer
   x = 92,055.20