Finding the Fourth Proportional to 78,705.42, 108,613.76 and 42,895.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705.42 : 108,613.76 = 42,895.73 : x
2. Step 2: Convert to fraction form
   78,705.42/108,613.76 = 42,895.73/x
3. Step 3: Cross multiply
   78,705.42x = 108,613.76 × 42,895.73
4. Step 4: Simplify right side
   78,705.42x = 4,659,065,765.70
5. Step 5: Solve for x
   x = 4,659,065,765.70/78,705.42
6. Step 6: Final answer
   x = 59,196.25