Finding the Fourth Proportional to 123,373.14, 185,116.05 and 67,128.90

Step by Step Solution

1. Step 1: Write the proportion equation
   123,373.14 : 185,116.05 = 67,128.90 : x
2. Step 2: Convert to fraction form
   123,373.14/185,116.05 = 67,128.90/x
3. Step 3: Cross multiply
   123,373.14x = 185,116.05 × 67,128.90
4. Step 4: Simplify right side
   123,373.14x = 12,426,636,808.85
5. Step 5: Solve for x
   x = 12,426,636,808.85/123,373.14
6. Step 6: Final answer
   x = 100,724.01