Finding the Fourth Proportional to 119,140.72, 164,451.10 and 76,699.25

Step by Step Solution

1. Step 1: Write the proportion equation
   119,140.72 : 164,451.10 = 76,699.25 : x
2. Step 2: Convert to fraction form
   119,140.72/164,451.10 = 76,699.25/x
3. Step 3: Cross multiply
   119,140.72x = 164,451.10 × 76,699.25
4. Step 4: Simplify right side
   119,140.72x = 12,613,275,839.93
5. Step 5: Solve for x
   x = 12,613,275,839.93/119,140.72
6. Step 6: Final answer
   x = 105,868.72