Finding the Fourth Proportional to 42,642.48, 63,936.32 and 17,699.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,642.48 : 63,936.32 = 17,699.72 : x
2. Step 2: Convert to fraction form
   42,642.48/63,936.32 = 17,699.72/x
3. Step 3: Cross multiply
   42,642.48x = 63,936.32 × 17,699.72
4. Step 4: Simplify right side
   42,642.48x = 1,131,654,961.83
5. Step 5: Solve for x
   x = 1,131,654,961.83/42,642.48
6. Step 6: Final answer
   x = 26,538.21