Finding the Fourth Proportional to 30,945.59, 42,711.93 and 19,630.70

Step by Step Solution

1. Step 1: Write the proportion equation
   30,945.59 : 42,711.93 = 19,630.70 : x
2. Step 2: Convert to fraction form
   30,945.59/42,711.93 = 19,630.70/x
3. Step 3: Cross multiply
   30,945.59x = 42,711.93 × 19,630.70
4. Step 4: Simplify right side
   30,945.59x = 838,464,870.69
5. Step 5: Solve for x
   x = 838,464,870.69/30,945.59
6. Step 6: Final answer
   x = 27,094.81