Finding the Fourth Proportional to 78,320.79, 117,333.23 and 60,704.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78,320.79 : 117,333.23 = 60,704.37 : x
2. Step 2: Convert to fraction form
   78,320.79/117,333.23 = 60,704.37/x
3. Step 3: Cross multiply
   78,320.79x = 117,333.23 × 60,704.37
4. Step 4: Simplify right side
   78,320.79x = 7,122,639,503.69
5. Step 5: Solve for x
   x = 7,122,639,503.69/78,320.79
6. Step 6: Final answer
   x = 90,941.88