Finding the Fourth Proportional to 93,304.18, 128,680.53 and 78,839.23

Step by Step Solution

1. Step 1: Write the proportion equation
   93,304.18 : 128,680.53 = 78,839.23 : x
2. Step 2: Convert to fraction form
   93,304.18/128,680.53 = 78,839.23/x
3. Step 3: Cross multiply
   93,304.18x = 128,680.53 × 78,839.23
4. Step 4: Simplify right side
   93,304.18x = 10,145,073,901.19
5. Step 5: Solve for x
   x = 10,145,073,901.19/93,304.18
6. Step 6: Final answer
   x = 108,731.18