Finding the Fourth Proportional to 279,821.44, 386,142.32 and 152,494.30

Step by Step Solution

1. Step 1: Write the proportion equation
   279,821.44 : 386,142.32 = 152,494.30 : x
2. Step 2: Convert to fraction form
   279,821.44/386,142.32 = 152,494.30/x
3. Step 3: Cross multiply
   279,821.44x = 386,142.32 × 152,494.30
4. Step 4: Simplify right side
   279,821.44x = 58,884,500,095.59
5. Step 5: Solve for x
   x = 58,884,500,095.59/279,821.44
6. Step 6: Final answer
   x = 210,435.99