Finding the Fourth Proportional to 71,644, 98,843.52 and 42,972.95

Step by Step Solution

1. Step 1: Write the proportion equation
   71,644 : 98,843.52 = 42,972.95 : x
2. Step 2: Convert to fraction form
   71,644/98,843.52 = 42,972.95/x
3. Step 3: Cross multiply
   71,644x = 98,843.52 × 42,972.95
4. Step 4: Simplify right side
   71,644x = 4,247,597,642.78
5. Step 5: Solve for x
   x = 4,247,597,642.78/71,644
6. Step 6: Final answer
   x = 59,287.56