Finding the Fourth Proportional to 78,496.24, 108,325.32 and 42,686.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,496.24 : 108,325.32 = 42,686.64 : x
2. Step 2: Convert to fraction form
   78,496.24/108,325.32 = 42,686.64/x
3. Step 3: Cross multiply
   78,496.24x = 108,325.32 × 42,686.64
4. Step 4: Simplify right side
   78,496.24x = 4,624,043,937.72
5. Step 5: Solve for x
   x = 4,624,043,937.72/78,496.24
6. Step 6: Final answer
   x = 58,907.84