Finding the Fourth Proportional to 101,142.15, 151,713.23 and 67,878.15

Step by Step Solution

1. Step 1: Write the proportion equation
   101,142.15 : 151,713.23 = 67,878.15 : x
2. Step 2: Convert to fraction form
   101,142.15/151,713.23 = 67,878.15/x
3. Step 3: Cross multiply
   101,142.15x = 151,713.23 × 67,878.15
4. Step 4: Simplify right side
   101,142.15x = 10,298,013,043.53
5. Step 5: Solve for x
   x = 10,298,013,043.53/101,142.15
6. Step 6: Final answer
   x = 101,817.23