Finding the Fourth Proportional to 78,789.98, 118,206.03 and 34,420.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,789.98 : 118,206.03 = 34,420.34 : x
2. Step 2: Convert to fraction form
   78,789.98/118,206.03 = 34,420.34/x
3. Step 3: Cross multiply
   78,789.98x = 118,206.03 × 34,420.34
4. Step 4: Simplify right side
   78,789.98x = 4,068,691,742.65
5. Step 5: Solve for x
   x = 4,068,691,742.65/78,789.98
6. Step 6: Final answer
   x = 51,639.71