Finding the Fourth Proportional to 78,401.73, 117,449.49 and 62,639.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,401.73 : 117,449.49 = 62,639.55 : x
2. Step 2: Convert to fraction form
   78,401.73/117,449.49 = 62,639.55/x
3. Step 3: Cross multiply
   78,401.73x = 117,449.49 × 62,639.55
4. Step 4: Simplify right side
   78,401.73x = 7,356,983,201.33
5. Step 5: Solve for x
   x = 7,356,983,201.33/78,401.73
6. Step 6: Final answer
   x = 93,837.00