Finding the Fourth Proportional to 390,002.04, 585,090.72 and 123,771.24

Step by Step Solution

1. Step 1: Write the proportion equation
   390,002.04 : 585,090.72 = 123,771.24 : x
2. Step 2: Convert to fraction form
   390,002.04/585,090.72 = 123,771.24/x
3. Step 3: Cross multiply
   390,002.04x = 585,090.72 × 123,771.24
4. Step 4: Simplify right side
   390,002.04x = 72,417,403,926.89
5. Step 5: Solve for x
   x = 72,417,403,926.89/390,002.04
6. Step 6: Final answer
   x = 185,684.68