Finding the Fourth Proportional to 178,978.05, 246,986.28 and 98,404.79

Step by Step Solution

1. Step 1: Write the proportion equation
   178,978.05 : 246,986.28 = 98,404.79 : x
2. Step 2: Convert to fraction form
   178,978.05/246,986.28 = 98,404.79/x
3. Step 3: Cross multiply
   178,978.05x = 246,986.28 × 98,404.79
4. Step 4: Simplify right side
   178,978.05x = 24,304,631,781.35
5. Step 5: Solve for x
   x = 24,304,631,781.35/178,978.05
6. Step 6: Final answer
   x = 135,796.72