Finding the Fourth Proportional to 609,443.51, 841,172.00 and 405,503.01

Step by Step Solution

1. Step 1: Write the proportion equation
   609,443.51 : 841,172.00 = 405,503.01 : x
2. Step 2: Convert to fraction form
   609,443.51/841,172.00 = 405,503.01/x
3. Step 3: Cross multiply
   609,443.51x = 841,172.00 × 405,503.01
4. Step 4: Simplify right side
   609,443.51x = 341,097,775,900.21
5. Step 5: Solve for x
   x = 341,097,775,900.21/609,443.51
6. Step 6: Final answer
   x = 559,687.28