Finding the Fourth Proportional to 71,238.48, 98,309.16 and 42,936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,238.48 : 98,309.16 = 42,936.72 : x
2. Step 2: Convert to fraction form
   71,238.48/98,309.16 = 42,936.72/x
3. Step 3: Cross multiply
   71,238.48x = 98,309.16 × 42,936.72
4. Step 4: Simplify right side
   71,238.48x = 4,221,072,876.36
5. Step 5: Solve for x
   x = 4,221,072,876.36/71,238.48
6. Step 6: Final answer
   x = 59,252.71