Finding the Fourth Proportional to 404,987.96, 607,473.72 and 105,461.91

Step by Step Solution

1. Step 1: Write the proportion equation
   404,987.96 : 607,473.72 = 105,461.91 : x
2. Step 2: Convert to fraction form
   404,987.96/607,473.72 = 105,461.91/x
3. Step 3: Cross multiply
   404,987.96x = 607,473.72 × 105,461.91
4. Step 4: Simplify right side
   404,987.96x = 64,065,338,786.01
5. Step 5: Solve for x
   x = 64,065,338,786.01/404,987.96
6. Step 6: Final answer
   x = 158,190.72