Finding the Fourth Proportional to 105,870.18, 158,597.66 and 61,403.54

Step by Step Solution

1. Step 1: Write the proportion equation
   105,870.18 : 158,597.66 = 61,403.54 : x
2. Step 2: Convert to fraction form
   105,870.18/158,597.66 = 61,403.54/x
3. Step 3: Cross multiply
   105,870.18x = 158,597.66 × 61,403.54
4. Step 4: Simplify right side
   105,870.18x = 9,738,456,659.71
5. Step 5: Solve for x
   x = 9,738,456,659.71/105,870.18
6. Step 6: Final answer
   x = 91,984.89