Finding the Fourth Proportional to 118,085.76, 177,174.72 and 68,139.48

Step by Step Solution

1. Step 1: Write the proportion equation
   118,085.76 : 177,174.72 = 68,139.48 : x
2. Step 2: Convert to fraction form
   118,085.76/177,174.72 = 68,139.48/x
3. Step 3: Cross multiply
   118,085.76x = 177,174.72 × 68,139.48
4. Step 4: Simplify right side
   118,085.76x = 12,072,593,289.95
5. Step 5: Solve for x
   x = 12,072,593,289.95/118,085.76
6. Step 6: Final answer
   x = 102,235.81