Finding the Fourth Proportional to 172,942, 238,663.61 and 97,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,942 : 238,663.61 = 97,490.50 : x
2. Step 2: Convert to fraction form
   172,942/238,663.61 = 97,490.50/x
3. Step 3: Cross multiply
   172,942x = 238,663.61 × 97,490.50
4. Step 4: Simplify right side
   172,942x = 23,267,434,183.25
5. Step 5: Solve for x
   x = 23,267,434,183.25/172,942
6. Step 6: Final answer
   x = 134,538.94