Finding the Fourth Proportional to 404,986.60, 607,471.70 and 105,460.56

Step by Step Solution

1. Step 1: Write the proportion equation
   404,986.60 : 607,471.70 = 105,460.56 : x
2. Step 2: Convert to fraction form
   404,986.60/607,471.70 = 105,460.56/x
3. Step 3: Cross multiply
   404,986.60x = 607,471.70 × 105,460.56
4. Step 4: Simplify right side
   404,986.60x = 64,064,305,666.15
5. Step 5: Solve for x
   x = 64,064,305,666.15/404,986.60
6. Step 6: Final answer
   x = 158,188.70