Finding the Fourth Proportional to 108,402.35, 149,577.39 and 68,087.40

Step by Step Solution

1. Step 1: Write the proportion equation
   108,402.35 : 149,577.39 = 68,087.40 : x
2. Step 2: Convert to fraction form
   108,402.35/149,577.39 = 68,087.40/x
3. Step 3: Cross multiply
   108,402.35x = 149,577.39 × 68,087.40
4. Step 4: Simplify right side
   108,402.35x = 10,184,335,583.89
5. Step 5: Solve for x
   x = 10,184,335,583.89/108,402.35
6. Step 6: Final answer
   x = 93,949.40