Finding the Fourth Proportional to 123,105.28, 169,847.52 and 75,308.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,105.28 : 169,847.52 = 75,308.80 : x
2. Step 2: Convert to fraction form
   123,105.28/169,847.52 = 75,308.80/x
3. Step 3: Cross multiply
   123,105.28x = 169,847.52 × 75,308.80
4. Step 4: Simplify right side
   123,105.28x = 12,791,012,914.18
5. Step 5: Solve for x
   x = 12,791,012,914.18/123,105.28
6. Step 6: Final answer
   x = 103,903.04