Finding the Fourth Proportional to 305,499.30, 458,139.59 and 105,766.05

Step by Step Solution

1. Step 1: Write the proportion equation
   305,499.30 : 458,139.59 = 105,766.05 : x
2. Step 2: Convert to fraction form
   305,499.30/458,139.59 = 105,766.05/x
3. Step 3: Cross multiply
   305,499.30x = 458,139.59 × 105,766.05
4. Step 4: Simplify right side
   305,499.30x = 48,455,614,782.92
5. Step 5: Solve for x
   x = 48,455,614,782.92/305,499.30
6. Step 6: Final answer
   x = 158,611.21