Finding the Fourth Proportional to 78,787.56, 118,007.70 and 65,123.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,787.56 : 118,007.70 = 65,123.58 : x
2. Step 2: Convert to fraction form
   78,787.56/118,007.70 = 65,123.58/x
3. Step 3: Cross multiply
   78,787.56x = 118,007.70 × 65,123.58
4. Step 4: Simplify right side
   78,787.56x = 7,685,083,891.57
5. Step 5: Solve for x
   x = 7,685,083,891.57/78,787.56
6. Step 6: Final answer
   x = 97,541.84