Finding the Fourth Proportional to 223,991.60, 309,108.42 and 123,389.60

Step by Step Solution

1. Step 1: Write the proportion equation
   223,991.60 : 309,108.42 = 123,389.60 : x
2. Step 2: Convert to fraction form
   223,991.60/309,108.42 = 123,389.60/x
3. Step 3: Cross multiply
   223,991.60x = 309,108.42 × 123,389.60
4. Step 4: Simplify right side
   223,991.60x = 38,140,762,754.89
5. Step 5: Solve for x
   x = 38,140,762,754.89/223,991.60
6. Step 6: Final answer
   x = 170,277.65