Finding the Fourth Proportional to 151,802.12, 227,398.61 and 139,401.02

Step by Step Solution

1. Step 1: Write the proportion equation
   151,802.12 : 227,398.61 = 139,401.02 : x
2. Step 2: Convert to fraction form
   151,802.12/227,398.61 = 139,401.02/x
3. Step 3: Cross multiply
   151,802.12x = 227,398.61 × 139,401.02
4. Step 4: Simplify right side
   151,802.12x = 31,699,598,180.58
5. Step 5: Solve for x
   x = 31,699,598,180.58/151,802.12
6. Step 6: Final answer
   x = 208,821.84