Finding the Fourth Proportional to 117,123.09, 161,519.23 and 76,871.76

Step by Step Solution

1. Step 1: Write the proportion equation
   117,123.09 : 161,519.23 = 76,871.76 : x
2. Step 2: Convert to fraction form
   117,123.09/161,519.23 = 76,871.76/x
3. Step 3: Cross multiply
   117,123.09x = 161,519.23 × 76,871.76
4. Step 4: Simplify right side
   117,123.09x = 12,416,267,483.94
5. Step 5: Solve for x
   x = 12,416,267,483.94/117,123.09
6. Step 6: Final answer
   x = 106,010.42