Finding the Fourth Proportional to 126,992.69, 190,499.40 and 63,780.30

Step by Step Solution

1. Step 1: Write the proportion equation
   126,992.69 : 190,499.40 = 63,780.30 : x
2. Step 2: Convert to fraction form
   126,992.69/190,499.40 = 63,780.30/x
3. Step 3: Cross multiply
   126,992.69x = 190,499.40 × 63,780.30
4. Step 4: Simplify right side
   126,992.69x = 12,150,108,881.82
5. Step 5: Solve for x
   x = 12,150,108,881.82/126,992.69
6. Step 6: Final answer
   x = 95,675.66