Finding the Fourth Proportional to 72,436.75, 99,963.08 and 42,243.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,436.75 : 99,963.08 = 42,243.01 : x
2. Step 2: Convert to fraction form
   72,436.75/99,963.08 = 42,243.01/x
3. Step 3: Cross multiply
   72,436.75x = 99,963.08 × 42,243.01
4. Step 4: Simplify right side
   72,436.75x = 4,222,741,388.07
5. Step 5: Solve for x
   x = 4,222,741,388.07/72,436.75
6. Step 6: Final answer
   x = 58,295.57