Finding the Fourth Proportional to 117,787.10, 162,544.52 and 64,072.49

Step by Step Solution

1. Step 1: Write the proportion equation
   117,787.10 : 162,544.52 = 64,072.49 : x
2. Step 2: Convert to fraction form
   117,787.10/162,544.52 = 64,072.49/x
3. Step 3: Cross multiply
   117,787.10x = 162,544.52 × 64,072.49
4. Step 4: Simplify right side
   117,787.10x = 10,414,631,479.71
5. Step 5: Solve for x
   x = 10,414,631,479.71/117,787.10
6. Step 6: Final answer
   x = 88,419.12