Finding the Fourth Proportional to 171,123.48, 236,055.61 and 99,495.59

Step by Step Solution

1. Step 1: Write the proportion equation
   171,123.48 : 236,055.61 = 99,495.59 : x
2. Step 2: Convert to fraction form
   171,123.48/236,055.61 = 99,495.59/x
3. Step 3: Cross multiply
   171,123.48x = 236,055.61 × 99,495.59
4. Step 4: Simplify right side
   171,123.48x = 23,486,491,350.88
5. Step 5: Solve for x
   x = 23,486,491,350.88/171,123.48
6. Step 6: Final answer
   x = 137,248.79