Finding the Fourth Proportional to 279,772.50, 386,086.53 and 152,448.09

Step by Step Solution

1. Step 1: Write the proportion equation
   279,772.50 : 386,086.53 = 152,448.09 : x
2. Step 2: Convert to fraction form
   279,772.50/386,086.53 = 152,448.09/x
3. Step 3: Cross multiply
   279,772.50x = 386,086.53 × 152,448.09
4. Step 4: Simplify right side
   279,772.50x = 58,858,154,073.23
5. Step 5: Solve for x
   x = 58,858,154,073.23/279,772.50
6. Step 6: Final answer
   x = 210,378.63