Finding the Fourth Proportional to 126,025.72, 188,594.34 and 78,663.05

Step by Step Solution

1. Step 1: Write the proportion equation
   126,025.72 : 188,594.34 = 78,663.05 : x
2. Step 2: Convert to fraction form
   126,025.72/188,594.34 = 78,663.05/x
3. Step 3: Cross multiply
   126,025.72x = 188,594.34 × 78,663.05
4. Step 4: Simplify right side
   126,025.72x = 14,835,405,908.89
5. Step 5: Solve for x
   x = 14,835,405,908.89/126,025.72
6. Step 6: Final answer
   x = 117,717.28