Finding the Fourth Proportional to 279,802.89, 386,127.41 and 152,478.18

Step by Step Solution

1. Step 1: Write the proportion equation
   279,802.89 : 386,127.41 = 152,478.18 : x
2. Step 2: Convert to fraction form
   279,802.89/386,127.41 = 152,478.18/x
3. Step 3: Cross multiply
   279,802.89x = 386,127.41 × 152,478.18
4. Step 4: Simplify right side
   279,802.89x = 58,876,003,962.52
5. Step 5: Solve for x
   x = 58,876,003,962.52/279,802.89
6. Step 6: Final answer
   x = 210,419.57