Finding the Fourth Proportional to 117,429.28, 162,050.37 and 71,472.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,429.28 : 162,050.37 = 71,472.31 : x
2. Step 2: Convert to fraction form
   117,429.28/162,050.37 = 71,472.31/x
3. Step 3: Cross multiply
   117,429.28x = 162,050.37 × 71,472.31
4. Step 4: Simplify right side
   117,429.28x = 11,582,114,280.25
5. Step 5: Solve for x
   x = 11,582,114,280.25/117,429.28
6. Step 6: Final answer
   x = 98,630.55