Finding the Fourth Proportional to 171,096.30, 236,171.70 and 99,498.78

Step by Step Solution

1. Step 1: Write the proportion equation
   171,096.30 : 236,171.70 = 99,498.78 : x
2. Step 2: Convert to fraction form
   171,096.30/236,171.70 = 99,498.78/x
3. Step 3: Cross multiply
   171,096.30x = 236,171.70 × 99,498.78
4. Step 4: Simplify right side
   171,096.30x = 23,498,796,020.53
5. Step 5: Solve for x
   x = 23,498,796,020.53/171,096.30
6. Step 6: Final answer
   x = 137,342.51