Finding the Fourth Proportional to 69,036.71, 103,543.31 and 19,105.10

Step by Step Solution

1. Step 1: Write the proportion equation
   69,036.71 : 103,543.31 = 19,105.10 : x
2. Step 2: Convert to fraction form
   69,036.71/103,543.31 = 19,105.10/x
3. Step 3: Cross multiply
   69,036.71x = 103,543.31 × 19,105.10
4. Step 4: Simplify right side
   69,036.71x = 1,978,205,526.86
5. Step 5: Solve for x
   x = 1,978,205,526.86/69,036.71
6. Step 6: Final answer
   x = 28,654.40