Finding the Fourth Proportional to 69,039.33, 103,547.25 and 19,107.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,039.33 : 103,547.25 = 19,107.72 : x
2. Step 2: Convert to fraction form
   69,039.33/103,547.25 = 19,107.72/x
3. Step 3: Cross multiply
   69,039.33x = 103,547.25 × 19,107.72
4. Step 4: Simplify right side
   69,039.33x = 1,978,551,859.77
5. Step 5: Solve for x
   x = 1,978,551,859.77/69,039.33
6. Step 6: Final answer
   x = 28,658.33