Finding the Fourth Proportional to 129,870.30, 194,811.85 and 67,662.30

Step by Step Solution

1. Step 1: Write the proportion equation
   129,870.30 : 194,811.85 = 67,662.30 : x
2. Step 2: Convert to fraction form
   129,870.30/194,811.85 = 67,662.30/x
3. Step 3: Cross multiply
   129,870.30x = 194,811.85 × 67,662.30
4. Step 4: Simplify right side
   129,870.30x = 13,181,417,838.26
5. Step 5: Solve for x
   x = 13,181,417,838.26/129,870.30
6. Step 6: Final answer
   x = 101,496.78