Finding the Fourth Proportional to 78,784.70, 108,763 and 60,839.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,784.70 : 108,763 = 60,839.42 : x
2. Step 2: Convert to fraction form
   78,784.70/108,763 = 60,839.42/x
3. Step 3: Cross multiply
   78,784.70x = 108,763 × 60,839.42
4. Step 4: Simplify right side
   78,784.70x = 6,617,077,837.46
5. Step 5: Solve for x
   x = 6,617,077,837.46/78,784.70
6. Step 6: Final answer
   x = 83,989.38