Finding the Fourth Proportional to 279,474.68, 385,662.96 and 152,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   279,474.68 : 385,662.96 = 152,150.72 : x
2. Step 2: Convert to fraction form
   279,474.68/385,662.96 = 152,150.72/x
3. Step 3: Cross multiply
   279,474.68x = 385,662.96 × 152,150.72
4. Step 4: Simplify right side
   279,474.68x = 58,678,897,041.33
5. Step 5: Solve for x
   x = 58,678,897,041.33/279,474.68
6. Step 6: Final answer
   x = 209,961.41