Finding the Fourth Proportional to 78,178.11, 107,885.52 and 42,369

Step by Step Solution

1. Step 1: Write the proportion equation
   78,178.11 : 107,885.52 = 42,369 : x
2. Step 2: Convert to fraction form
   78,178.11/107,885.52 = 42,369/x
3. Step 3: Cross multiply
   78,178.11x = 107,885.52 × 42,369
4. Step 4: Simplify right side
   78,178.11x = 4,571,001,596.88
5. Step 5: Solve for x
   x = 4,571,001,596.88/78,178.11
6. Step 6: Final answer
   x = 58,469.07