Finding the Fourth Proportional to 42,889.74, 64,334.15 and 17,583.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,889.74 : 64,334.15 = 17,583.61 : x
2. Step 2: Convert to fraction form
   42,889.74/64,334.15 = 17,583.61/x
3. Step 3: Cross multiply
   42,889.74x = 64,334.15 × 17,583.61
4. Step 4: Simplify right side
   42,889.74x = 1,131,226,603.28
5. Step 5: Solve for x
   x = 1,131,226,603.28/42,889.74
6. Step 6: Final answer
   x = 26,375.23