Finding the Fourth Proportional to 102,949.39, 142,087.16 and 70,657.48

Step by Step Solution

1. Step 1: Write the proportion equation
   102,949.39 : 142,087.16 = 70,657.48 : x
2. Step 2: Convert to fraction form
   102,949.39/142,087.16 = 70,657.48/x
3. Step 3: Cross multiply
   102,949.39x = 142,087.16 × 70,657.48
4. Step 4: Simplify right side
   102,949.39x = 10,039,520,287.96
5. Step 5: Solve for x
   x = 10,039,520,287.96/102,949.39
6. Step 6: Final answer
   x = 97,518.98