Finding the Fourth Proportional to 405,124.71, 607,673.98 and 120,817.59

Step by Step Solution

1. Step 1: Write the proportion equation
   405,124.71 : 607,673.98 = 120,817.59 : x
2. Step 2: Convert to fraction form
   405,124.71/607,673.98 = 120,817.59/x
3. Step 3: Cross multiply
   405,124.71x = 607,673.98 × 120,817.59
4. Step 4: Simplify right side
   405,124.71x = 73,417,705,769.31
5. Step 5: Solve for x
   x = 73,417,705,769.31/405,124.71
6. Step 6: Final answer
   x = 181,222.48