Finding the Fourth Proportional to 105,690.88, 158,534.72 and 25,729.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,690.88 : 158,534.72 = 25,729.60 : x
2. Step 2: Convert to fraction form
   105,690.88/158,534.72 = 25,729.60/x
3. Step 3: Cross multiply
   105,690.88x = 158,534.72 × 25,729.60
4. Step 4: Simplify right side
   105,690.88x = 4,079,034,931.71
5. Step 5: Solve for x
   x = 4,079,034,931.71/105,690.88
6. Step 6: Final answer
   x = 38,594.01