Finding the Fourth Proportional to 140,429.10, 193,792.16 and 76,766.90

Step by Step Solution

1. Step 1: Write the proportion equation
   140,429.10 : 193,792.16 = 76,766.90 : x
2. Step 2: Convert to fraction form
   140,429.10/193,792.16 = 76,766.90/x
3. Step 3: Cross multiply
   140,429.10x = 193,792.16 × 76,766.90
4. Step 4: Simplify right side
   140,429.10x = 14,876,822,014.71
5. Step 5: Solve for x
   x = 14,876,822,014.71/140,429.10
6. Step 6: Final answer
   x = 105,938.31