Finding the Fourth Proportional to 279,442.72, 385,633.34 and 152,118.01

Step by Step Solution

1. Step 1: Write the proportion equation
   279,442.72 : 385,633.34 = 152,118.01 : x
2. Step 2: Convert to fraction form
   279,442.72/385,633.34 = 152,118.01/x
3. Step 3: Cross multiply
   279,442.72x = 385,633.34 × 152,118.01
4. Step 4: Simplify right side
   279,442.72x = 58,661,776,270.45
5. Step 5: Solve for x
   x = 58,661,776,270.45/279,442.72
6. Step 6: Final answer
   x = 209,924.15