Finding the Fourth Proportional to 78,134.96, 107,826.36 and 42,325.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,134.96 : 107,826.36 = 42,325.28 : x
2. Step 2: Convert to fraction form
   78,134.96/107,826.36 = 42,325.28/x
3. Step 3: Cross multiply
   78,134.96x = 107,826.36 × 42,325.28
4. Step 4: Simplify right side
   78,134.96x = 4,563,780,878.38
5. Step 5: Solve for x
   x = 4,563,780,878.38/78,134.96
6. Step 6: Final answer
   x = 58,408.95