Finding the Fourth Proportional to 279,822.27, 386,144.96 and 152,495.31

Step by Step Solution

1. Step 1: Write the proportion equation
   279,822.27 : 386,144.96 = 152,495.31 : x
2. Step 2: Convert to fraction form
   279,822.27/386,144.96 = 152,495.31/x
3. Step 3: Cross multiply
   279,822.27x = 386,144.96 × 152,495.31
4. Step 4: Simplify right side
   279,822.27x = 58,885,294,617.66
5. Step 5: Solve for x
   x = 58,885,294,617.66/279,822.27
6. Step 6: Final answer
   x = 210,438.20