Finding the Fourth Proportional to 131,123.04, 180,922.68 and 76,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   131,123.04 : 180,922.68 = 76,664.72 : x
2. Step 2: Convert to fraction form
   131,123.04/180,922.68 = 76,664.72/x
3. Step 3: Cross multiply
   131,123.04x = 180,922.68 × 76,664.72
4. Step 4: Simplify right side
   131,123.04x = 13,870,386,603.85
5. Step 5: Solve for x
   x = 13,870,386,603.85/131,123.04
6. Step 6: Final answer
   x = 105,781.46