Finding the Fourth Proportional to 209,978.72, 314,903.42 and 60,178.84

Step by Step Solution

1. Step 1: Write the proportion equation
   209,978.72 : 314,903.42 = 60,178.84 : x
2. Step 2: Convert to fraction form
   209,978.72/314,903.42 = 60,178.84/x
3. Step 3: Cross multiply
   209,978.72x = 314,903.42 × 60,178.84
4. Step 4: Simplify right side
   209,978.72x = 18,950,522,527.63
5. Step 5: Solve for x
   x = 18,950,522,527.63/209,978.72
6. Step 6: Final answer
   x = 90,249.73