Finding the Fourth Proportional to 78,404.30, 117,520.05 and 43,369.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,404.30 : 117,520.05 = 43,369.10 : x
2. Step 2: Convert to fraction form
   78,404.30/117,520.05 = 43,369.10/x
3. Step 3: Cross multiply
   78,404.30x = 117,520.05 × 43,369.10
4. Step 4: Simplify right side
   78,404.30x = 5,096,738,800.46
5. Step 5: Solve for x
   x = 5,096,738,800.46/78,404.30
6. Step 6: Final answer
   x = 65,005.86