Finding the Fourth Proportional to 69,022.78, 103,536.50 and 19,098.70

Step by Step Solution

1. Step 1: Write the proportion equation
   69,022.78 : 103,536.50 = 19,098.70 : x
2. Step 2: Convert to fraction form
   69,022.78/103,536.50 = 19,098.70/x
3. Step 3: Cross multiply
   69,022.78x = 103,536.50 × 19,098.70
4. Step 4: Simplify right side
   69,022.78x = 1,977,412,552.55
5. Step 5: Solve for x
   x = 1,977,412,552.55/69,022.78
6. Step 6: Final answer
   x = 28,648.69