Finding the Fourth Proportional to 305,499.42, 458,139.78 and 105,766.18

Step by Step Solution

1. Step 1: Write the proportion equation
   305,499.42 : 458,139.78 = 105,766.18 : x
2. Step 2: Convert to fraction form
   305,499.42/458,139.78 = 105,766.18/x
3. Step 3: Cross multiply
   305,499.42x = 458,139.78 × 105,766.18
4. Step 4: Simplify right side
   305,499.42x = 48,455,693,291.29
5. Step 5: Solve for x
   x = 48,455,693,291.29/305,499.42
6. Step 6: Final answer
   x = 158,611.41