Finding the Fourth Proportional to 404,965.31, 607,447.98 and 105,445.04

Step by Step Solution

1. Step 1: Write the proportion equation
   404,965.31 : 607,447.98 = 105,445.04 : x
2. Step 2: Convert to fraction form
   404,965.31/607,447.98 = 105,445.04/x
3. Step 3: Cross multiply
   404,965.31x = 607,447.98 × 105,445.04
4. Step 4: Simplify right side
   404,965.31x = 64,052,373,511.78
5. Step 5: Solve for x
   x = 64,052,373,511.78/404,965.31
6. Step 6: Final answer
   x = 158,167.56