Finding the Fourth Proportional to 113,506.31, 156,638.71 and 65,787.34

Step by Step Solution

1. Step 1: Write the proportion equation
   113,506.31 : 156,638.71 = 65,787.34 : x
2. Step 2: Convert to fraction form
   113,506.31/156,638.71 = 65,787.34/x
3. Step 3: Cross multiply
   113,506.31x = 156,638.71 × 65,787.34
4. Step 4: Simplify right side
   113,506.31x = 10,304,844,056.27
5. Step 5: Solve for x
   x = 10,304,844,056.27/113,506.31
6. Step 6: Final answer
   x = 90,786.53