Finding the Fourth Proportional to 175,388.24, 242,035.40 and 99,936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   175,388.24 : 242,035.40 = 99,936.72 : x
2. Step 2: Convert to fraction form
   175,388.24/242,035.40 = 99,936.72/x
3. Step 3: Cross multiply
   175,388.24x = 242,035.40 × 99,936.72
4. Step 4: Simplify right side
   175,388.24x = 24,188,223,999.89
5. Step 5: Solve for x
   x = 24,188,223,999.89/175,388.24
6. Step 6: Final answer
   x = 137,912.46