Finding the Fourth Proportional to 42,036.74, 63,020.78 and 19,561.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,036.74 : 63,020.78 = 19,561.47 : x
2. Step 2: Convert to fraction form
   42,036.74/63,020.78 = 19,561.47/x
3. Step 3: Cross multiply
   42,036.74x = 63,020.78 × 19,561.47
4. Step 4: Simplify right side
   42,036.74x = 1,232,779,097.35
5. Step 5: Solve for x
   x = 1,232,779,097.35/42,036.74
6. Step 6: Final answer
   x = 29,326.23