Finding the Fourth Proportional to 279,196.18, 385,288.98 and 151,872.28

Step by Step Solution

1. Step 1: Write the proportion equation
   279,196.18 : 385,288.98 = 151,872.28 : x
2. Step 2: Convert to fraction form
   279,196.18/385,288.98 = 151,872.28/x
3. Step 3: Cross multiply
   279,196.18x = 385,288.98 × 151,872.28
4. Step 4: Simplify right side
   279,196.18x = 58,514,715,851.47
5. Step 5: Solve for x
   x = 58,514,715,851.47/279,196.18
6. Step 6: Final answer
   x = 209,582.80