Finding the Fourth Proportional to 171,061.54, 236,043.93 and 99,457.54

Step by Step Solution

1. Step 1: Write the proportion equation
   171,061.54 : 236,043.93 = 99,457.54 : x
2. Step 2: Convert to fraction form
   171,061.54/236,043.93 = 99,457.54/x
3. Step 3: Cross multiply
   171,061.54x = 236,043.93 × 99,457.54
4. Step 4: Simplify right side
   171,061.54x = 23,476,348,609.73
5. Step 5: Solve for x
   x = 23,476,348,609.73/171,061.54
6. Step 6: Final answer
   x = 137,239.20