Finding the Fourth Proportional to 189,978.84, 285,294.27 and 168,679.69

Step by Step Solution

1. Step 1: Write the proportion equation
   189,978.84 : 285,294.27 = 168,679.69 : x
2. Step 2: Convert to fraction form
   189,978.84/285,294.27 = 168,679.69/x
3. Step 3: Cross multiply
   189,978.84x = 285,294.27 × 168,679.69
4. Step 4: Simplify right side
   189,978.84x = 48,123,349,022.38
5. Step 5: Solve for x
   x = 48,123,349,022.38/189,978.84
6. Step 6: Final answer
   x = 253,308.99