Finding the Fourth Proportional to 78,680.94, 118,043.31 and 34,311.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,680.94 : 118,043.31 = 34,311.60 : x
2. Step 2: Convert to fraction form
   78,680.94/118,043.31 = 34,311.60/x
3. Step 3: Cross multiply
   78,680.94x = 118,043.31 × 34,311.60
4. Step 4: Simplify right side
   78,680.94x = 4,050,254,835.40
5. Step 5: Solve for x
   x = 4,050,254,835.40/78,680.94
6. Step 6: Final answer
   x = 51,476.95