Finding the Fourth Proportional to 69,100.79, 103,658.59 and 19,181.10

Step by Step Solution

1. Step 1: Write the proportion equation
   69,100.79 : 103,658.59 = 19,181.10 : x
2. Step 2: Convert to fraction form
   69,100.79/103,658.59 = 19,181.10/x
3. Step 3: Cross multiply
   69,100.79x = 103,658.59 × 19,181.10
4. Step 4: Simplify right side
   69,100.79x = 1,988,285,166.45
5. Step 5: Solve for x
   x = 1,988,285,166.45/69,100.79
6. Step 6: Final answer
   x = 28,773.70