Finding the Fourth Proportional to 123,428.15, 185,146.68 and 63,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,428.15 : 185,146.68 = 63,440.50 : x
2. Step 2: Convert to fraction form
   123,428.15/185,146.68 = 63,440.50/x
3. Step 3: Cross multiply
   123,428.15x = 185,146.68 × 63,440.50
4. Step 4: Simplify right side
   123,428.15x = 11,745,797,026.81
5. Step 5: Solve for x
   x = 11,745,797,026.81/123,428.15
6. Step 6: Final answer
   x = 95,163.03