Finding the Fourth Proportional to 279,138.83, 385,200.46 and 151,814.52

Step by Step Solution

1. Step 1: Write the proportion equation
   279,138.83 : 385,200.46 = 151,814.52 : x
2. Step 2: Convert to fraction form
   279,138.83/385,200.46 = 151,814.52/x
3. Step 3: Cross multiply
   279,138.83x = 385,200.46 × 151,814.52
4. Step 4: Simplify right side
   279,138.83x = 58,479,023,128.45
5. Step 5: Solve for x
   x = 58,479,023,128.45/279,138.83
6. Step 6: Final answer
   x = 209,497.99