Finding the Fourth Proportional to 142,835.49, 214,068.70 and 67,978.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,835.49 : 214,068.70 = 67,978.58 : x
2. Step 2: Convert to fraction form
   142,835.49/214,068.70 = 67,978.58/x
3. Step 3: Cross multiply
   142,835.49x = 214,068.70 × 67,978.58
4. Step 4: Simplify right side
   142,835.49x = 14,552,086,418.39
5. Step 5: Solve for x
   x = 14,552,086,418.39/142,835.49
6. Step 6: Final answer
   x = 101,880.05