Finding the Fourth Proportional to 69,870.69, 104,822.28 and 19,951.47

Step by Step Solution

1. Step 1: Write the proportion equation
   69,870.69 : 104,822.28 = 19,951.47 : x
2. Step 2: Convert to fraction form
   69,870.69/104,822.28 = 19,951.47/x
3. Step 3: Cross multiply
   69,870.69x = 104,822.28 × 19,951.47
4. Step 4: Simplify right side
   69,870.69x = 2,091,358,574.75
5. Step 5: Solve for x
   x = 2,091,358,574.75/69,870.69
6. Step 6: Final answer
   x = 29,931.84